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https://www.readbyqxmd.com/read/28212536/targeting-the-stress-oncoprotein-ledgf-p75-to-sensitize-chemoresistant-prostate-cancer-cells-to-taxanes
#1
Leslimar Ríos-Colón, Christina K Cajigas-Du Ross, Anamika Basu, Catherine Elix, Ivana Alicea-Polanco, Tino W Sanchez, Vinodh Radhakrishnan, Chien-Shing Chen, Carlos A Casiano
Prostate cancer (PCa) is associated with chronic prostate inflammation resulting in activation of stress and pro-survival pathways that contribute to disease progression and chemoresistance. The stress oncoprotein lens epithelium-derived growth factor p75 (LEDGF/p75), also known as DFS70 autoantigen, promotes cellular survival against environmental stressors, including oxidative stress, radiation, and cytotoxic drugs. Furthermore, LEDGF/p75 overexpression in PCa and other cancers has been associated with features of tumor aggressiveness, including resistance to cell death and chemotherapy...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28211869/non-apoptotic-cell-death-in-animal-development
#2
REVIEW
Lena M Kutscher, Shai Shaham
Programmed cell death (PCD) is an important process in the development of multicellular organisms. Apoptosis, a form of PCD characterized morphologically by chromatin condensation, membrane blebbing, and cytoplasm compaction, and molecularly by the activation of caspase proteases, has been extensively investigated. Studies in Caenorhabditis elegans, Drosophila, mice, and the developing chick have revealed, however, that developmental PCD also occurs through other mechanisms, morphologically and molecularly distinct from apoptosis...
February 17, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28207238/real-time-monitoring-of-post-surgical-and-post-traumatic-eye-injuries-using-multi-layered-electrical-biosensor-chip
#3
Muhammad Shuja Khan, Santosh K Misra, Aaron Schwartz-Duval, Enrique A Daza, Fatemeh Ostadhossein, Matthew Bowman, Akshay Jain, Gina Taylor, Deana McDonagh, Leanne T Labriola, Dipanjan Pan
Lack of current techniques for the early monitoring of bleb leaks and other post-traumatic or post-surgical ocular injury has posed an unmet clinical need for the development of new techniques. Present evaluation techniques use either subjective or non-quantitative approaches. At present, there are no FDA approved ocular devices that can directly measure ascorbic acid (AA) concentration levels for both tear film (TF) and aqueous humor (AH) at point-of-care (POC) level. Toward this aim, we present a novel point-of-care (POC) quantitative assay, called the Ocular Biosensor device, which can be used to evaluate the integrity of the anterior surface of the eye by measuring the concentration of AA in TF and AH...
February 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28203200/late-onset-inadvertent-bleb-formation-following-pars-plana-m3-molteno-implant-tube-obstruction
#4
Anmar M Abdul-Rahman, Anthony Molteno
PURPOSE: To report a case of inadvertent bleb formation presenting 18 months after pars plana M3 Molteno implant tube obstruction in a patient with mixed mechanism glaucoma. MATERIALS AND METHODS: An 84-year-old Caucasian male with mixed mechanism glaucoma underwent slit-lamp examination, gonioscopy, colour anterior segment photography and anterior segment optical coherence tomography (AS-OCT). RESULTS: An inadvertent bleb developed 18 months after pars plana implant tube re-positioning with a 6/0 Vicryl tie ligature...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28199397/efficacy-and-safety-of-preoperative-iop-reduction-using-a-preservative-free-fixed-combination-of-dorzolamide-timolol-eye-drops-versus-oral-acetazolamide-and-dexamethasone-eye-drops-and-assessment-of-the-clinical-outcome-of-trabeculectomy-in-glaucoma
#5
Katrin Lorenz, Joanna Wasielica-Poslednik, Katharina Bell, Giulia Renieri, Alexander Keicher, Christian Ruckes, Norbert Pfeiffer, Hagen Thieme
INTRODUCTION: To demonstrate that preoperative treatment for 28 days with topical dorzolamide/timolol is non-inferior (Δ = 4 mm Hg) to oral acetazolamide and topical dexamethasone (standard therapy) in terms of intraocular pressure (IOP) reduction 3 and 6 months after trabeculectomy in glaucoma patients. MATERIALS AND METHODS: Sixty-two eyes undergoing trabeculectomy with mitomycin C were included in this monocentric prospective randomized controlled study. IOP change between baseline and 3 months post-op was defined as the primary efficacy variable...
2017: PloS One
https://www.readbyqxmd.com/read/28197740/characteristics-of-successful-filtering-blebs-at-1%C3%A2-year-after-trabeculectomy-using-swept-source-three-dimensional-anterior-segment-optical-coherence-tomography
#6
Akiko Narita, Yuki Morizane, Tomoe Miyake, Jiro Seguchi, Tetsuya Baba, Fumio Shiraga
PURPOSE: To identify the cross-sectional characteristics of filtering blebs associated with intraocular pressure (IOP) control at 1 year after trabeculectomy with a square scleral flap and a fornix-based conjunctival flap. METHODS: A retrospective consecutive case series study was conducted. Eighty-four eyes of 79 patients who had undergone primary trabeculectomy were included. Surgical success was defined as IOP ≤15 mmHg and a >20% reduction in IOP without glaucoma medication and without additional glaucoma surgery at 1 year after trabeculectomy...
February 14, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28193892/kv1-1-channelopathy-abolishes-presynaptic-spike-width-modulation-by-subthreshold-somatic-depolarization
#7
Umesh Vivekananda, Pavel Novak, Oscar D Bello, Yuri E Korchev, Shyam S Krishnakumar, Kirill E Volynski, Dimitri M Kullmann
Although action potentials propagate along axons in an all-or-none manner, subthreshold membrane potential fluctuations at the soma affect neurotransmitter release from synaptic boutons. An important mechanism underlying analog-digital modulation is depolarization-mediated inactivation of presynaptic Kv1-family potassium channels, leading to action potential broadening and increased calcium influx. Previous studies have relied heavily on recordings from blebs formed after axon transection, which may exaggerate the passive propagation of somatic depolarization...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28188728/trabeculectomy-bleb-associated-infections
#8
REVIEW
M Reza Razeghinejad, Shane J Havens, L Jay Katz
Trabeculectomy with antimetabolites is the most commonly performed surgery worldwide for glaucoma patients with progressive optic nerve head injury and visual field loss despite maximum pharmacologic intraocular pressure (IOP) lowering therapy. Trabeculectomy bleb-associated infections (BAI) remain one of the most feared early and long-term complications of trabeculectomy surgery because of their poor prognosis and variable response to antimicrobial therapy. Several studies have evaluated how surgical technique, conjunctival incision location, comorbid ocular pathology, concurrent medication use, and bleb morphology affect the risk of BAI...
February 7, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28188019/qualitative-analysis-of-repaired-filtering-blebs-with-anterior-segment-optical-coherence-tomography
#9
M Cerdà-Ibáñez, V T Pérez-Torregrosa, A Olate-Pérez, I Almor Palacios, A Gargallo-Benedicto, V Osorio-Alayo, A Barreiro Rego, A Duch-Samper
OBJECTIVE: To provide a qualitative analysis of filtering blebs after being surgically repaired due to late blebs leaks. METHODS: Blebs were studied 6 months after surgical reparation using AS-OCT Triton (Topcon(®)). An analysis was made of the morphological pattern and internal structures of blebs, including the covering, in 10 patients. The images were obtained using OCTs at a wavelength of 1050nm. RESULTS: According to the Hirooka classification, three different patterns were found in the structure of blebs, which made it possible to correlate them with their functionality...
February 7, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28186501/intrinsic-repair-protects-cells-from-pore-forming-toxins-by-microvesicle-shedding
#10
Matthew Romero, Michelle Keyel, Guilan Shi, Pushpak Bhattacharjee, Robyn Roth, John E Heuser, Peter A Keyel
Pore-forming toxins (PFTs) are used by both the immune system and by pathogens to disrupt cell membranes. Cells attempt to repair this disruption in various ways, but the exact mechanism(s) that cells use are not fully understood, nor agreed upon. Current models for membrane repair include (1) patch formation (e.g., fusion of internal vesicles with plasma membrane defects), (2) endocytosis of the pores, and (3) shedding of the pores by blebbing from the cell membrane. In this study, we sought to determine the specific mechanism(s) that cells use to resist three different cholesterol-dependent PFTs: Streptolysin O, Perfringolysin O, and Intermedilysin...
February 10, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28183143/rapid-documented-growth-of-aneurysm-bleb-led-to-rupture-of-an-incidental-intracranial-anterior-communicating-artery-aneurysm
#11
Jan-Karl Burkhardt, Jorn Fierstra, Giuseppe Esposito, Gerasimos Baltsavias, Oliver Bozinov, Luca Regli
Background A major challenge in the management of patients with unruptured intracranial aneurysms (UIAs) is to identify criteria indicating a higher risk of future UIA rupture. We report a rare patient with documented short-term bleb growth of an UIA followed by a fatal aneurysm rupture supporting the high risk of rupture of short-term shape changes in UIAs. Case Description A 72-year-old man with an incidental unruptured anterior communicating artery aneurysm of 9 mm showed a bleb growth on the aneurysm sac at 6-week follow-up computed tomography angiography (CTA)...
February 9, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28179173/proposed-parent-vessel-geometry-based-classification-of-the-anterior-communicating-artery-located-aneurysms
#12
Tamer Hassan, Amr Elsayed, Mohamed Abbas, Ahmed Sultan, Yousry Eladawy
BACKGROUND AND OBJECTIVES: The present study is focused on correlation of parent vessels and Neck diameters with Acoma aneurysmal depth and growth direction. The study principally aims to suggest new classification of Acoma-located aneurysms based on physical characteristics of parent vessels. METHODS: Retrospective analysis of 155 patients with ruptured Acoma-located aneurysms. Percentage of difference between both A1 arteries was measured on CT angiography images and neck locations were determined...
February 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28169918/bilateral-blebs-secondary-to-spontaneous-scleral-perforations
#13
Ester Fernández López, Alexander Poon, Andrew Huhtanen, Richard Lindsay, Catherine Green
PURPOSE: To report an unusual case of bilateral spontaneous scleral perforations. METHODS: A 34-year-old woman presented with bilateral conjunctival blebs and decreased vision in both eyes. There was no history of ocular trauma or surgery and no previous ophthalmic or systemic conditions that may have contributed to the scleral perforations. RESULTS: Best-corrected visual acuity was 20/40 in both eyes and intraocular pressures were 6 mm Hg in the right and 5 mm Hg in the left...
February 6, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28168984/pleurectomy-versus-pleural-abrasion-for-primary-spontaneous-pneumothorax-in-children
#14
Shahrzad Joharifard, Brian A Coakley, Sonia A Butterworth
PURPOSE: Primary spontaneous pneumothorax (PSP) represents a common indication for urgent surgical intervention in children. First episodes are often managed with thoracostomy tube, whereas recurrent episodes typically prompt surgery involving apical bleb resection and pleurodesis, either via pleurectomy or pleural abrasion. The purpose of this study was to assess whether pleurectomy or pleural abrasion was associated with lower postoperative recurrence. METHODS: The records of patients undergoing surgery for PSP between February 2005 and December 2015 were retrospectively reviewed...
January 27, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28153618/development-and-validation-of-the-procedure-related-neurological-complications-risk-score-for-elderly-patients-with-ruptured-intracranial-aneurysm-undergoing-endovascular-treatment
#15
Guoli Duan, Wanling Wen, Qiao Zuo, Pengfei Yang, Lei Zhang, Bo Hong, Yi Xu, Jianmin Liu, Qinghai Huang
OBJECTIVES: Our aim was to develop and validate a procedure-related neurological complications (PNC) risk score for individual elderly patients with rupture intracranial aneurysms (RIAs) undergoing endovascular treatment (EVT). METHODS: Preoperatively collected data, including clinical, lesion, and procedure characteristics of consecutive elderly patients (≥ 60 years), were used to develop a PNC risk predictive score based on the coefficients (β) of a multivariable logistic regression analysis...
January 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28150590/assessment-of-thermal-effects-in-a-model-of-the-human-head-implanted-with-a-wireless-active-microvalve-for-the-treatment-of-glaucoma-creating-a-filtering-bleb
#16
Federico Schaumburg, Fabio Guarnieri
A 3D anatomical computational model is developed to assess thermal effects due to exposure to the electromagnetic field required to power a new investigational active implantable microvalve for the treatment of glaucoma. Such device, located in the temporal superior eye quadrant, produces a filtering bleb which is included in the geometry of the model, together with relevant ocular structures. The electromagnetic field source, a planar coil, and the microvalve antenna and casing are also included. Exposure to the electromagnetic field source of an implanted and a non-implanted subject are simulated by solving a magnetic potential formulation, using the finite element method...
February 2, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28149562/correlation-of-matrix-metalloproteinase-2-and-9-expression-with-recurrences-in-primary-spontaneous-pneumothorax-patients
#17
Wen-Chin Chiu, Yi-Chen Lee, Yu-Han Su, Chee-Yin Chai, Stephen Chu-Sung Hu, Shyng-Shiou F Yuan, Shah-Hwa Chou
BACKGROUND: Primary spontaneous pneumothorax (PSP) is a common benign disorder. However, unpredictable recurrence is a major concern for most patients. The aim of the present study was to assess the role of matrix metalloproteinase-2 (MMP-2) and MMP-9 in alveolar macrophages of patients with PSP and its relationship with recurrence. METHODS: Ninety-two patients who received needlescopic video-assisted thoracoscopic surgery (NVATS) wedge resection of lung with identifiable blebs for PSP were enrolled for the study...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28144751/glaucoma-drainage-device-surgery-in-children-and-adults-a-comparative-study-of-outcomes-and-complications
#18
Achilleas Mandalos, Velota Sung
PURPOSE: To compare the postoperative outcomes and complications of glaucoma drainage device (GDD) surgery in pediatric (<18 years old) and adult patients. METHODS: Retrospective, comparative study including all patients who underwent Baervedlt or Molteno device surgery by the same surgeon. Success criteria included postoperative intraocular pressure (IOP) between 6 and 21 mmHg and a 20% reduction from baseline. RESULTS: Fifty-two children (69 eyes) and 130 adults (145 eyes) were included...
February 1, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28141567/blue-rubber-bleb-nevus-syndrome-promising-response-to-sirolimus
#19
Canan Akyuz, Hilal Susam-Sen, Burca Aydin
BACKGROUND: Blue rubber bleb nevus syndrome is a rare disease involving venous malformations. CASE CHARACTERISTICS: We present a 6-year-old female with the syndrome, and consumptive coagulopathy. INTERVENTION/OUTCOME: After management with sirolimus, symptoms resolved. MESSAGE: Sirolimus may be a valuable option for reducing bleeding complications and cosmetic sequelae for the patients with this syndrome.
January 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28139154/safety-and-efficacy-of-a-membrane-tube-type-glaucoma-shunt-device-an-animal-trial
#20
Dai Woo Kim, Young Hoon Hwang, Byung Heon Ahn, Eun-Kyung Lee, Chang-Sik Kim
PURPOSE: To evaluate the safety and efficacy of a membrane-tube-type glaucoma shunt device (MT-device), which was developed to control intraocular pressure (IOP) with a lower chance of complications than conventional glaucoma surgery, in a rabbit model. MATERIALS AND METHODS: The MT-device consists of an expanded polytetrafluoroethylene membrane (thickness 0.2 mm, area 2.5 × 2.5 mm(2)) and a tube (internal diameter 76 µm, external diameter 175.5 µm, length 7 mm) attached to the membrane...
January 31, 2017: Current Eye Research
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