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https://www.readbyqxmd.com/read/29334314/on-the-intrinsic-constraint-of-bacterial-growth-rate-m-tuberculosis-s-view-of-the-protein-translation-capacity
#1
Manlu Zhu, Xiongfeng Dai
In nature, the maximal growth rates vary widely among different bacteria species. Fast-growing bacteria species such as Escherichia coli can have a shortest generation time of 20 min. Slow-growing bacteria species are perhaps best known for Mycobacterium tuberculosis, a human pathogen with a generation time being no less than 16 h. Despite of the significant progress made on understanding the pathogenesis of M. tuberculosis, we know little on the origin of its intriguingly slow growth. From a global view, the intrinsic constraint of the maximal growth rate of bacteria remains to be a fundamental question in microbiology...
January 15, 2018: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/29332666/optimizing-reverse-shoulder-arthroplasty-component-position-in-the-setting-of-advanced-arthritis-with-posterior-glenoid-erosion-a-computer-enhanced-range-of-motion-analysis
#2
Jay D Keener, Brendan M Patterson, Nathan Orvets, Alexander W Aleem, Aaron M Chamberlain
BACKGROUND: Our study purpose was to determine the optimal glenoid and humeral reverse shoulder arthroplasty (RSA) component design and position in osteoarthritic shoulders with severe glenoid retroversion deformities. METHODS: Computed tomography scans from 10 subjects were analyzed with advanced software including RSA range of motion (ROM) analysis. Variables included glenoid component retroversion of 0°, 5°, 10°, 15°, and 20° and baseplate lateralization of 0, 5, and 10 mm...
February 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29331589/the-iridocorneal-endothelial-syndrome
#3
REVIEW
Luis Silva, Ahmad Najafi, Yanin Suwan, Chaiwat Teekhasaenee, Robert Ritch
The iridocorneal endothelial syndrome (ICE) represents a unique group of ocular pathologies (Chandler syndrome, progressive iris atrophy, and Cogan-Reese syndrome) characterized by the proliferation of corneal endothelial cells that migrate toward the iridocorneal angle and iris surface causing, to a degree varying according to the subtype, corneal edema and decompensation, and secondary glaucoma, whether by obstructing the angle or producing peripheral anterior synechiae by contraction of the basement membrane of the migrating cells over the surface of the iris...
January 10, 2018: Survey of Ophthalmology
https://www.readbyqxmd.com/read/29331090/enhanced-chondrogenesis-of-mesenchymal-stem-cells-over-silk-fibroin-chitosan-chondroitin-sulfate-three-dimensional-scaffold-in-dynamic-culture-condition
#4
Parinita Agrawal, Krishna Pramanik, Varshini Vishwanath, Amit Biswas, Akalabya Bissoyi, Pradeep Kumar Patra
Chondroitin sulfate (Ch) is one of the main structural components of cartilage tissue, therefore, its presence in tissue engineered scaffold is expected to enhance cartilage regeneration. Previously, silk fibroin/chitosan (SF/CS) blend was proven to be a potential biomaterial for tissue development. In this study, the effect of Ch on physicochemical and biological properties of SF/CS blend was investigated and scaffolds with 0.8 wt% Ch was found to be favorable. The scaffolds possess pore size of 37-212 µm, contact angle 46...
January 13, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29329947/-pseudoexfoliation-syndrome-and-pseudoexfoliation-glaucoma
#5
REVIEW
C Schweitzer
Pseudoexfoliation syndrome is an age-related systemic disease that mainly affects the anterior structures of the eye. Despite a worldwide distribution, reported incidence and prevalence of this syndrome vary widely between ethnicities and geographical areas. The exfoliative material is composed mainly of abnormal cross-linked fibrils that accumulate progressively in some organs such as the heart, blood vessels, lungs or meninges, and particularly in the anterior structures of the eye. The exact pathophysiological process still remains unclear but the association of genetic and environmental factors are thought to play a role in the development and progressive extracellular accumulation of exfoliative material...
January 9, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29320937/radiographic-measurements-associated-with-the-natural-progression-of-the-hallux-valgus-during-at-least-2-years-of-follow-up
#6
Seung Yeol Lee, Chin Youb Chung, Moon Seok Park, Ki Hyuk Sung, Sonya Ahmed, Seungbum Koo, Dong-Wan Kang, Kyoung Min Lee
BACKGROUND: This study aimed to investigate the radiographic measurements associated with the progression of hallux valgus during at least 2 years of follow-up. METHODS: Seventy adult patients with hallux valgus who were followed for at least 2 years and underwent weightbearing foot radiography were included. Radiographic measurements included the hallux valgus angle (HVA), hallux interphalangeal angle, intermetatarsal angle (IMA), metatarsus adductus angle, distal metatarsal articular angle (DMAA), tibial sesamoid position, anteroposterior (AP) talo-first metatarsal angle, and lateral talo-first metatarsal angle...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29319598/corneal-collagen-cross-linking-with-riboflavin-and-ultraviolet-a-light-for-pediatric-keratoconus-ten-year-results
#7
Cosimo Mazzotta, Claudio Traversi, Stefano Baiocchi, Simone Bagaglia, Orsola Caporossi, Antonio Villano, Aldo Caporossi
PURPOSE: To assess the 10-year follow-up efficacy and safety of riboflavin ultraviolet A-induced cross-linking (CXL) in a population of pediatric patients aged 18 years and younger with progressive keratoconus (KC). METHODS: The prospective longitudinal cohort study included 62 eyes of 47 keratoconic patients undergoing epithelium-off CXL who completed 10-year follow-up. The surgical procedure was performed in all patients according to the Siena (Dresden modified) protocol...
January 9, 2018: Cornea
https://www.readbyqxmd.com/read/29318284/screening-for-adolescent-idiopathic-scoliosis-us-preventive-services-task-force-recommendation-statement
#8
David C Grossman, Susan J Curry, Douglas K Owens, Michael J Barry, Karina W Davidson, Chyke A Doubeni, John W Epling, Alex R Kemper, Alex H Krist, Ann E Kurth, C Seth Landefeld, Carol M Mangione, Maureen G Phipps, Michael Silverstein, Melissa A Simon, Chien-Wen Tseng
Importance: Adolescent idiopathic scoliosis, a lateral curvature of the spine of unknown cause with a Cobb angle of at least 10°, occurs in children and adolescents aged 10 to 18 years. Idiopathic scoliosis is the most common form and usually worsens during adolescence before skeletal maturity. Severe spinal curvature may be associated with adverse long-term health outcomes (eg, pulmonary disorders, disability, back pain, psychological effects, cosmetic issues, and reduced quality of life)...
January 9, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29318283/screening-for-adolescent-idiopathic-scoliosis-evidence-report-and-systematic-review-for-the-us-preventive-services-task-force
#9
John Dunn, Nora B Henrikson, Caitlin C Morrison, Paula R Blasi, Matt Nguyen, Jennifer S Lin
Importance: Adolescent idiopathic scoliosis (AIS), a spinal curvature of 10° or more, is the most common form of scoliosis, with a prevalence of 1% to 3%. Curves progress in approximately two-thirds of patients with AIS before skeletal maturity, and large curves (>50°) may be associated with adverse health outcomes. Objective: To systematically review evidence on benefits and harms of AIS screening for the US Preventive Services Task Force (USPSTF). Data Sources: Cochrane Central Register of Controlled Trials, MEDLINE, ERIC, PubMed, CINAHL, and relevant systematic reviews were searched for studies published from January 1966 to October 20, 2016; studies included in a previous USPSTF report were also reviewed...
January 9, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29317068/etiological-mechanism-of-iridocorneal-endothelial-ice-syndrome-may-involve-infection-of-herpes-simplex-virus-hsv-and-integration-of-viral-genes-into-human-genome
#10
Fei Li, Yaoming Liu, Yi Sun, Xiulan Zhang
Iridocorneal (ICE) syndrome is a rare ocular disease characterized by abnormal proliferation of corneal endothelial cells, progressive obstruction of irido-corneal angle and atrophy of iris. ICE syndrome progressed slowly, but can cause serious complications such as secondary glaucoma in late stage. Because the etiology of ICE syndrome is not clear, there is still no effective treatment in clinical practice. Previous studies have detected herpes simplex virus (HSV) DNA inside patient's aqueous humor. However, no further explanation for HSV-related etiology of ICE syndrome was established...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29306069/development-of-multi-metal-interaction-model-for-daphnia-magna-significance-of-metallothionein-in-cellular-redistribution
#11
Xiangrui Wang, Jianyu Liu, Qiaoguo Tan, Jinqian Ren, Dingyuan Liang, Wenhong Fan
Despite the great progress made in metal-induced toxicity mechanisms, a critical knowledge gap still exists in predicting adverse effects of heavy metals on living organisms in the natural environment, particularly during exposure to multi-metals. In this study, a multi-metal interaction model of Daphnia manga was developed in an effort to provide reasonable explanations regarding the joint effects resulting from exposure to multi-metals. Metallothionein (MT), a widely used biomarker, was selected. In this model, MT was supposed to play the role of a crucial transfer protein rather than detoxifying protein...
January 3, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29305369/radius-maumenee-syndrome-a-rare-cause-of-glaucoma
#12
Sara Homem de Melo Marques, Cláudia Farinha, Amélia Martins, Pedro Faria
Case presentation of a 41-year-old woman with long-standing bilateral eye injection whose clinical findings included bilateral episcleral vessel engorgement and tortuosity, raised intraocular pressure with open iridocorneal angles and left optic disc cupping. All remaining objective examination was normal. She underwent cranial and orbits CT and CT-angiography scans which were unremarkable. Optical coherence tomography of the peripapillary nerve fibre layer and automated perimetry were compatible with advanced glaucomatous damage on the left eye...
January 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29304509/effect-of-foot-progression-angle-adjustment-on-the-knee-adduction-moment-and-knee-joint-contact-force-in-runners-with-and-without-knee-osteoarthritis
#13
I C D Fong, W S C Li, W K J Tai, T W R Tsang, J H Zhang, T L W Chen, H Baur, P Eichelberger, R T H Cheung
BACKGROUND: Knee adduction moment (KAM) is often used as a surrogate marker of knee contact force (KCF) during walking. Previous studies have reported potential benefits to reduce KAM in patients with knee osteoarthritis (OA) by foot progression angle adjustment. However, KAM is an external moment and it does not consider any muscle contribution to the joint loading, which should pose a greater influence in running than walking. RESEARCH QUESTION: This study used a computational model to compare KAM and KCF between runners with and without knee OA during running...
December 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29303879/comparison-of-peripapillary-oct-angiography-vessel-density-and-retinal-nerve-fiber-layer-thickness-measurements-for-their-ability-to-detect-progression-in-glaucoma
#14
Gábor Holló
PURPOSE: To investigate the applicability of peripapillary optical coherence tomography angiography angioflow vessel-density measurements in the retinal nerve fiber layer for the detection of glaucomatous progression; and to compare its performance with that of retinal nerve fiber layer thickness (RNFLT) measurements. METHODS: Prospective RNFLT and vessel-density measurements with the same Angiovue/RTVue-XR instrument were made immediately after each other on one eye of 9 normal, 20 under treatment ocular hypertensive (OHT) and 24 under treatment open-angle glaucoma patients at 6-month intervals for 2 years (5 visits for all eyes)...
January 4, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29302683/association-of-functional-loss-with-the-biomechanical-response-of-the-optic-nerve-head-to-acute-transient-intraocular-pressure-elevations
#15
Tin A Tun, Eray Atalay, Mani Baskaran, Monisha E Nongpiur, Hla M Htoon, David Goh, Ching-Yu Cheng, Shamira A Perera, Tin Aung, Nicholas G Strouthidis, Michaël J A Girard
Importance: The acute biomechanical response of the optic nerve head (ONH) to intraocular pressure (IOP) elevations may serve as a biomarker for the development and progression of glaucoma. Objective: To evaluate the association between visual field loss and the biomechanical response of the ONH to acute transient IOP elevations. Design, Setting, and Participants: In this observational study, 91 Chinese patients (23 with primary open-angle glaucoma [POAG], 45 with primary angle-closure glaucoma, and 23 without glaucoma) were recruited from September 3, 2014, through February 2, 2017...
January 4, 2018: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29302324/national-and-subnational-prevalence-and-burden-of-glaucoma-in-china-a-systematic-analysis
#16
Peige Song, Jiawen Wang, Kajo Bucan, Evropi Theodoratou, Igor Rudan, Kit Yee Chan
Background: Glaucoma, the second leading cause of blindness, affects approximately 64.3 million individuals worldwide. In China, demographic ageing is in rapid progress. Yet detailed and up-to-date estimates of the scale of glaucoma are rare. We aimed to quantify and understand the prevalence and burden of glaucoma in China from 1990 to 2015, with projections until 2050. Methods: For this systematic review and meta-analysis, we searched China National Knowledge Infrastructure (CNKI), Wanfang, Chinese Biomedicine Literature Database (CBM-SinoMed), PubMed, Embase and Medline using comprehensive search strategies to identify all relevant articles that have reported the prevalence of glaucoma in the general Chinese population...
December 2017: Journal of Global Health
https://www.readbyqxmd.com/read/29297726/long-term-surgical-outcomes-in-the-sagging-eye-syndrome
#17
Zia Chaudhuri, Joseph L Demer
BACKGROUND/AIMS: Strabismus due to sagging eye syndrome (SES) caused by age-related connective tissue involution is now an established cause of diplopia in older people. High suspicion of the condition results in early recognition, often obviating extensive neurological investigations and enabling surgical correction of the strabismus. METHODS: This retrospective study reviewed surgical results in 93 patients (40 males) of average age 68 ± 12 years, who had small-angle strabismus due to SES, during the 20-year period 1994-2014...
January 3, 2018: Strabismus
https://www.readbyqxmd.com/read/29295872/fibrotic-venous-remodeling-and-nonmaturation-of-arteriovenous-fistulas
#18
Laisel Martinez, Juan C Duque, Marwan Tabbara, Angela Paez, Guillermo Selman, Diana R Hernandez, Chad A Sundberg, Jason Chieh Sheng Tey, Yan-Ting Shiu, Alfred K Cheung, Michael Allon, Omaida C Velazquez, Loay H Salman, Roberto I Vazquez-Padron
The frequency of primary failure in arteriovenous fistulas (AVFs) remains unacceptably high. This lack of improvement is due in part to a poor understanding of the pathobiology underlying AVF nonmaturation. This observational study quantified the progression of three vascular features, medial fibrosis, intimal hyperplasia (IH), and collagen fiber organization, during early AVF remodeling and evaluated the associations thereof with AVF nonmaturation. We obtained venous samples from patients undergoing two-stage upper-arm AVF surgeries at a single center, including intraoperative veins at the first-stage access creation surgery and AVFs at the second-stage transposition procedure...
January 2, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29290133/assessment-of-radiographic-and-clinical-outcomes-of-an-articulating-expandable-interbody-cage-in-minimally-invasive-transforaminal-lumbar-interbody-fusion-for-spondylolisthesis
#19
Lara W Massie, Hesham Mostafa Zakaria, Lonni R Schultz, Azam Basheer, Morenikeji Ayodele Buraimoh, Victor Chang
OBJECTIVE The inability to significantly improve sagittal parameters has been a limitation of minimally invasive surgery for transforaminal lumbar interbody fusion (MIS TLIF). Traditional cages have a limited capacity to restore lordosis. This study evaluates the use of a crescent-shaped articulating expandable cage (Altera) for MIS TLIF. METHODS This is a retrospective review of 1- and 2-level MIS TLIF. Radiographic outcomes included differences in segmental and lumbar lordosis, disc height, evidence of fusion, and any endplate violations...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29290065/pathophysiology-of-primary-open-angle-glaucoma-from-a-neuroinflammatory-and-neurotoxicity-perspective-a-review-of-the-literature
#20
REVIEW
Karine Evangelho, Maria Mogilevskaya, Monica Losada-Barragan, Jeinny Karina Vargas-Sanchez
PURPOSE: Glaucoma is the leading cause of blindness in humans, affecting 2% of the population. This disorder can be classified into various types including primary, secondary, glaucoma with angle closure and with open angle. The prevalence of distinct types of glaucoma differs for each particular region of the world. One of the most common types of this disease is primary open-angle glaucoma (POAG), which is a complex inherited disorder characterized by progressive retinal ganglion cell death, optic nerve head excavation and visual field loss...
December 30, 2017: International Ophthalmology
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