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https://www.readbyqxmd.com/read/28437276/clinical-outcome-of-rebubbling-for-graft-detachment-after-descemet-membrane-endothelial-keratoplasty
#1
Nadine Gerber-Hollbach, Lamis Baydoun, Ester Fernández López, Laurence E Frank, Isabel Dapena, Vasilios S Liarakos, Sontje-Chiao Schaal, Lisanne Ham, Silke Oellerich, Gerrit R J Melles
PURPOSE: To assess the clinical outcome after successful rebubbling procedures for visually significant graft detachment after Descemet membrane endothelial keratoplasty (DMEK). METHODS: From a total of 760 consecutive DMEK surgeries, 41 eyes required rebubbling. Of those, 33 eyes of 31 patients were successful and were included in our retrospective outcome analysis study. Main outcome measures were compared with those of matched controls with uneventful primary DMEK (attached DMEK grafts without rebubbling)...
April 21, 2017: Cornea
https://www.readbyqxmd.com/read/28434176/persistent-and-recurrent-hyperparathyroidism
#2
REVIEW
Carole Guerin, Nunzia Cinzia Paladino, Aoife Lowery, Fréderic Castinetti, David Taieb, Fréderic Sebag
Despite remarkable progress in imaging modalities and surgical management, persistence or recurrence of primary hyperparathyroidism (PHPT) still occurs in 2.5-5% of cases of PHPT. The aim of this review is to expose the management of persistent and recurrent hyperparathyroidism. A literature search was performed on MEDLINE using the search terms "recurrent" or "persistent" and "hyperparathyroidism" within the past 10 years. We also searched the reference lists of articles identified by this search strategy and selected those we judged relevant...
April 22, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28433995/effect-of-prophylactic-dialysis-on-morbidity-and-mortality-in-non-dialysis-dependent-patients-after-coronary-artery-bypass-grafting-a-pilot-study
#3
Roghayeh Borji, Seyyed Hossein Ahmadi, Khosrow Barkhordari, Ali Pasha Meysami, Abbas Ali Karimi, Seyedeh Hamideh Mortazavi, Parinaaz Dadlani, Farah Ayatollah Zadeh Esfahani, Seyyed Mohammad Reza Khatami
BACKGROUND/AIMS: Coronary artery bypass grafting (CABG) is associated with an increased risk of morbidity and mortality in patients with pre-existing renal dysfunction. Numerous measures have been implemented to overcome this problem; however, no improvement in outcomes has been achieved. This study was aimed at investigating the effects of prophylactic dialysis on mortality and morbidity in these patients. METHODS: This randomized-controlled clinical trial enrolled 88 non-dialysis-dependent patients with chronic kidney disease awaiting CABG surgery...
April 22, 2017: Nephron
https://www.readbyqxmd.com/read/28433941/self-assembled-dual-responsive-micelles-stabilized-with-protein-for-co-delivery-of-drug-and-sirna-in-cancer-therapy
#4
M R Aji Alex, Chetan Nehate, Srivani Veeranarayanan, D Sakthi Kumar, Ritu Kulshreshtha, Veena Koul
Design of safe and efficient vehicles for the combinatorial delivery of drugs and genetic agents is an emerging requisite for achieving enhanced therapeutic effect in cancer. Even though several nanoplatforms have been explored for the co-delivery of drugs and genetic materials the translation of these systems to clinical phase is still a challenge, mainly due to tedious synthesis procedures, lack of serum stability, inefficient scalability etc. Here in, we report development of reduction and pH sensitive polymeric graft of low molecular weight poly (styrene -alt -maleic anhydride) and evaluation of its efficacy in co-delivering drug and siRNA...
April 17, 2017: Biomaterials
https://www.readbyqxmd.com/read/28433837/internal-maxillary-bypass-for-complex-pediatric-aneurysms
#5
Long Wang, Shuaibin Lu, Hai Qian, Xiang'en Shi
BACKGROUND: Complex pediatric aneurysms (PAs) are an unusual clinicopathologic entity, and data remain limited regarding the use of a bypass procedure to treat this formidable disorder. METHODS: Internal maxillary artery (IMA) to middle cerebral artery (MCA) bypass with radial artery graft (RAG) was utilized to isolate PAs. Bypass patency and aneurysm stability were evaluated using intraoperative Doppler ultrasound, indocyanine green videoangiography and postoperative angiography...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433215/meta-analysis-of-randomized-controlled-trials-of-percutaneous-coronary-intervention-with-drug-eluting-stents-versus-coronary-artery-bypass-grafting-in-left-main-coronary-artery-disease
#6
Aakash Garg, Sunil V Rao, Sahil Agrawal, Kleanthis Theodoropoulos, Marco Mennuni, Abhishek Sharma, Lohit Garg, Giuseppe Ferrante, Omar A Meelu, Davit Sargsyan, Bernhard Reimers, Marc Cohen, John B Kostis, Giulio G Stefanini
Few randomized controlled trials (RCTs) and observational studies had shown acceptable short-term efficacy and safety of percutaneous coronary intervention (PCI) with drug-eluting stents (DES) compared with coronary artery bypass grafting (CABG) in selected patients with left main coronary artery disease (LMCAD). We aimed to evaluate long-term outcomes of PCI using DES compared with CABG in patients with LMCAD. On November 1, 2016, we searched available databases for published RCTs directly comparing DES PCI with CABG in patients with LMCAD...
March 29, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28433061/graphene-coated-polymeric-anion-exchangers-for-ion-chromatography
#7
Kai Zhang, Minyi Cao, Chaoyan Lou, Shuchao Wu, Peimin Zhang, Mingyu Zhi, Yan Zhu
Carbonaceous stationary phases have gained much attention for their peculiar selectivity and robustness. Herein we report the fabrication and application of a graphene-coated polymeric stationary phase for anion exchange chromatography. The graphene-coated particles were fabricated by a facile evaporation-reduction method. These hydrophilic particles were proven appropriate substrates for grafting of hyperbranched condensation polymers (HBCPs) to make pellicular anion exchangers. The new phase was characterized by zeta potentials, Fourier transform infrared spectroscopy, thermogravimetry and scanning electron microscope...
June 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28433025/a-combined-theoretical-and-experimental-study-of-phenol-acetylene-n-n-%C3%A2-7-clusters
#8
Gurmeet Singh, Apurba Nandi, Shridhar R Gadre, Takashi Chiba, Asuka Fujii
Structures and vibrational spectra of phenol-(acetylene)n (Ph(Ac)n) clusters are studied by a combination of theoretical calculations and infrared (IR) spectroscopy. The molecular electrostatic potential features are utilized for generating trial geometries of the medium-sized Ph(Ac)n (n = 1, 2, 4, 6, and 7) clusters. These initial geometries are subjected to geometry optimization within the second-order Møller-Plesset (MP2) theory, employing correlation consistent aug-cc-pVDZ (aVDZ) basis set. Minimal nature of the reported structures is confirmed by doing vibrational frequency run at MP2/aVDZ level of theory using full calculations for n = 1 and 2 and employing grafting based molecular tailoring approach for the n = 4, 6, and 7...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28430307/the-incidence-and-risk-factors-of-coronary-steal-after-ipsilateral-avf-in-patients-with-a-coronary-artery-bypass-graft
#9
Sanghyun Ahn, Ahram Han, Song-Yi Kim, Chanjoong Choi, Sang-Il Min, Jongwon Ha, Ho Young Hwang, Ki-Bong Kim, Seung-Kee Min
OBJECTIVE: Ipsilateral arteriovenous fistula (AVF) may cause symptoms of coronary steal in patients who had undergone coronary artery bypass graft (CABG) using internal thoracic artery. The purpose of this study was to evaluate the adverse effects of ipsilateral AVF to CABG, including the incidence of coronary steal, and to analyze the risk factors for coronary steal. METHODS: Between 2000 and 2013, a total of 25 patients undergoing hemodialysis via upper extremity AVF, ipsilateral to the preexisting CABG, were reviewed retrospectively...
April 14, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28426449/temperature-and-oxygenation-during-organ-preservation-friends-or-foes
#10
Nicholas Gilbo, Diethard Monbaliu
PURPOSE OF REVIEW: The liberalization of donor selection criteria in organ transplantation, with the increased use of suboptimal grafts, has stimulated interest in ischemia-reperfusion injury prevention and graft reconditioning. Organ preservation technologies are changing considerably, mostly through the reintroduction of dynamic machine preservation. Here, we review the current evidence on the role of temperature and oxygenation during dynamic machine preservation. RECENT FINDINGS: A large but complex body of evidence exists and comparative studies are few...
April 19, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28425018/hepatocellular-carcinoma-and-liver-transplantation-changing-patterns-and-practices
#11
REVIEW
Nicole E Rich, Neehar D Parikh, Amit G Singal
Benefits of liver transplantation (LT) for patients with hepatocellular carcinoma (HCC) are well established. However, there is debate regarding optimal and equitable selection of patients best served by LT, particularly in the face of limited organ availability. Herein, we discuss topics regarding LT selection criteria for patients with HCC. Recent change in UNOS policy currently mandates a 6-month observation period prior to priority listing and institutes a cap of 34 MELD exception points for patients with HCC...
April 19, 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28422265/nanoporous-poly-3-hexylthiophene-thin-film-structures-from-self-organization-of-a-tunable-molecular-bottlebrush-scaffold
#12
Suk-Kyun Ahn, Jan-Michael Y Carrillo, Jong K Keum, Jihua Chen, David Uhrig, Bradley S Lokitz, Bobby G Sumpter, S Michael Kilbey
The ability to widely tune the design of macromolecular bottlebrushes provides access to self-assembled nanostructures formed by microphase segregation in melt, thin film and solution that depart from structures adopted by simple linear copolymers. A series of random bottlebrush copolymers containing poly(3-hexylthiophene) (P3HT) and poly(d,l-lactide) (PLA) side chains grafted on a poly(norbornene) backbone were synthesized via ring-opening metathesis polymerization (ROMP) using the grafting through approach...
April 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28421749/design-of-multi-functional-nanogate-in-response-to-multiple-external-stimuli-using-amphiphilic-diblock-copolymer
#13
Kai Huang, Igal Szleifer
Nature uses the interplay between hydrophobic and electrostatic interactions of disordered proteins to orchestrate complicated molecular gate such as the nuclear pore complex to control the transport of biological masses. Inspired by nature, we here theoretically show that well-defined gate shape, sensitive response to pH and salt concentration, and selectivity in cargo transport can be simultaneously achieved by grafting amphiphilic diblock copolymers made of sequence-controlled hydrophobic and ionizable monomers on the inner surface of solid-state nanopore...
April 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28420425/acceleration-of-tendon-bone-healing-of-anterior-cruciate-ligament-graft-using-intermittent-negative-pressure-in-rabbits
#14
Zhengming Sun, Xiaoqing Wang, Ming Ling, Wei Wang, Yanhai Chang, Guang Yang, Xianghui Dong, Shixun Wu, Xueyuan Wu, Bo Yang, Ming Chen
BACKGROUND: The purpose of this study was to test effects of negative pressure on tendon-bone healing after reconstruction of anterior cruciate ligament (ACL) in rabbits. METHODS: Hind legs of 24 New Zealand White rabbits were randomly selected as negative pressure group and the contralateral hind legs as control. Reconstruction of the ACL was done. Joints of the negative pressure side were placed with drainage tubes connecting the micro-negative pressure aspirator...
April 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28418908/plasma-protein-profiling-in-patients-undergoing-coronary-artery-bypass-grafting-surgery-and-clinical-significance
#15
Zhi-Peng Guo, Hai-Tao Hou, Rui Jing, Zhen-Guo Song, Xiao-Cheng Liu, Guo-Wei He
This study was designed to identify the protein profiling in patients with triple vessel coronary artery disease (CAD) undergoing CABG, in order to detect CAD-related differential proteins in these patients. CABG patients with triple vessel disease with/without left main stenosis (n =160) were compared to normal coronary angiographic subjects (n =160). Plasma samples of 20 males and 20 females in each group were analyzed with iTRAQ technique. ELISA test was used to test the chosen proteins from iTRAQ results in plasma samples from a new cohort of the CABG group (n=120, male/femal=61/59) and control (n =120, male/female=60/60)...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417431/robotic-kidney-transplantation-an-update
#16
REVIEW
V Sankaran, S Sinha
PURPOSE OF REVIEW: Over the last decade, there have been advances in kidney transplantation with introduction of minimally invasive surgery. Robotic surgery is becoming increasingly common across the specialities. There is now increasing experience in robotic kidney transplantation, though it remains a niche procedure. Initial reports suggest that this is a safe, feasible operation when performed by teams familiar with robotic surgery. There have been a few modifications to the initially described procedure, as a result of increasing experience...
June 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28417337/descemet-stripping-automated-endothelial-keratoplasty-versus-descemet-membrane-endothelial-keratoplasty-a-meta-analysis
#17
REVIEW
Leru Zhu, Yi Zha, Jianqiu Cai, Yanling Zhang
PURPOSE: To evaluate the efficacy and safety of descemet stripping automated endothelial keratoplasty (DSAEK) compared with descemet membrane endothelial keratoplasty (DMEK). METHODS: Databases including PubMed, EMBASE, and Cochrane Library were searched to find studies that compared DSAEK and DMEK outcomes. Efficacy parameters were the postoperative best-corrected visual acuity (BCVA) and spherical equivalent (SE). Safety parameters were postoperative endothelial cell loss (ECL), air injection (rebubbling), graft failure, graft rejection, and high intraocular pressure (IOP)...
April 17, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28417213/retrospective-analysis-of-cervical-corpectomies-implant-related-complications-of-one-and-two-level-corpectomies-in-45-patients
#18
Sebastian Hartmann, P Kavakebi, C Wipplinger, A Tschugg, P P Girod, S Lener, C Thomé
Cervical corpectomies are increasingly used to treat degenerative, metastatic, inflammatory and traumatic multisegmental diseases. The postoperative results are thought to correlate mainly with the number of resected vertebral bodies. Thus, the aim of the study was to analyse complications and early outcome of these procedures to document the implant-related complications in order to set up a prospective clinical trial. Forty-five patients, who were treated in our department from 2011 to 2014 and who were available for a minimum follow-up of 1 year, were consecutively included in this retrospective evaluation...
April 17, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28414565/new-regenerative-vascular-grafts-for-hemodialysis-access-evaluation-of-a-preclinical-animal-model
#19
Karen Tatiana Valencia Rivero, Juliana Jaramillo Escobar, Sergio David Galvis Forero, Maria Clara Miranda Saldaña, Rocío Del Pilar López Panqueva, Néstor Fernando Sandoval Reyes, Juan Carlos Briceño Triana
The purpose of this study was to evaluate a suitable animal model for the in vivo evaluation of patency and vascular tissue regeneration in small intestinal submucosa (SIS) vascular grafts for hemodialysis access. First, a 4-mm U-shaped SIS vascular graft was implanted between the internal carotid artery (CA) and the external jugular vein (JV) in five sheep and six swine. The U-shape grafts remained functional for 53 ± 4 days in sheep and 32 ± 2 days in swine. The sheep model presented exaggerated inflammation, so the swine model was selected for the in vivo study...
April 17, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28413066/temporary-portal-vein-embolization-is%C3%A2-as%C3%A2-efficient-as-permanent-portal-vein%C3%A2-embolization-in-mice
#20
Andrea Wirsching, Emmanuel Melloul, Ksenia Lezhnina, Anton A Buzdin, Omolara O Ogunshola, Pieter Borger, Pierre-Alain Clavien, Mickaël Lesurtel
BACKGROUND: Temporary portal vein embolization may be a safe alternative to permanent portal vein embolization. Such a new approach could be applied in living-related liver transplantation to increase graft volume before procurement. The impact of temporary portal vein embolization on occluded liver after recanalization, however, has never been assessed. Using a mouse model of temporary portal vein embolization, we investigated (1) the efficiency of temporary portal vein embolization in inducing nonoccluded liver hypertrophy and (2) the regeneration potential and functional recovery of embolized liver after recanalization...
April 13, 2017: Surgery
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