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https://www.readbyqxmd.com/read/28211852/plasmodium-falciparum-crk4-directs-continuous-rounds-of-dna-replication-during-schizogony
#1
Markus Ganter, Jonathan M Goldberg, Jeffrey D Dvorin, Joao A Paulo, Jonas G King, Abhai K Tripathi, Aditya S Paul, Jing Yang, Isabelle Coppens, Rays H Y Jiang, Brendan Elsworth, David A Baker, Rhoel R Dinglasan, Steven P Gygi, Manoj T Duraisingh
Plasmodium parasites, the causative agents of malaria, have evolved a unique cell division cycle in the clinically relevant asexual blood stage of infection(1). DNA replication commences approximately halfway through the intracellular development following invasion and parasite growth. The schizont stage is associated with multiple rounds of DNA replication and nuclear division without cytokinesis, resulting in a multinucleated cell. Nuclei divide asynchronously through schizogony, with only the final round of DNA replication and segregation being synchronous and coordinated with daughter cell assembly(2,3)...
February 17, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28209746/a-phase-ii-randomized-trial-go27827-of-first-line-folfox-plus-bevacizumab-with-or-without-the-met-inhibitor-onartuzumab-in-patients-with-metastatic-colorectal-cancer
#2
Johanna C Bendell, Howard Hochster, Lowell L Hart, Irfan Firdaus, Joseph R Mace, Joshua J McFarlane, Mark Kozloff, Daniel Catenacci, Jessie J Hsu, Stephen P Hack, David S Shames, See-Chun Phan, Hartmut Koeppen, Allen L Cohn
BACKGROUND: Dysregulated hepatocyte growth factor/mesenchymal-epithelial transition (MET) signaling is associated with poor prognosis and resistance to vascular endothelial growth factor inhibition in metastatic colorectal cancer (mCRC). We report outcomes from a double-blind, multicenter phase II trial of the MET inhibitor onartuzumab in combination with mFOLFOX-6 and bevacizumab for mCRC (GO27827; NCT01418222). MATERIALS AND METHODS: Patients were randomized 1:1 to receive onartuzumab (10 mg/kg intravenously [IV]) or placebo plus mFOLFOX-6 and bevacizumab (5 mg/kg IV)...
February 16, 2017: Oncologist
https://www.readbyqxmd.com/read/28209379/endocultivation-continuous-application-of-rhbmp-2-via-mini-osmotic-pumps-to-induce-bone-formation-at-extraskeletal-sites
#3
B E Beck-Broichsitter, S T Becker, H Seitz, J Wiltfang, P H Warnke
The continuous presence of recombinant human bone morphogenetic protein 2 (rhBMP-2) inside a scaffold may be crucial to the outcome in bone tissue engineering. This study investigated whether the release of the growth factor rhBMP-2 via different continuous application schemes influences histomorphological aspects of the hard and soft tissues induced. Three-dimensionally printed hydroxyapatite scaffolds were implanted into one latissimus dorsi muscle of 42 female Lewis rats. Simultaneously implanted mini-osmotic pumps were used to provide a continuous application of rhBMP-2 over 1, 2, or 4 weeks (total dose 200μg)...
February 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28208320/dynamic-model-for-kinesin-mediated-long-range-transport-and-its-local-traffic-jam-caused-by-tau-proteins
#4
Woochul Nam, Bogdan I Epureanu
In neurons, several intracellular cargoes are transported by motor proteins (kinesins) which walk on microtubules (MTs). However, kinesins can possibly unbind from the MTs before they reach their destinations. The unbound kinesins randomly diffuse in neurons until they bind to MTs. Then, they walk again along the MTs to continue their tasks. Kinesins repeat this cycle of motion until they transport their cargoes to the destinations. However, most previous models mainly focused on the motion of kinesins when they walk on MTs...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28205468/vascularized-medial-femoral-condyle-bone-graft-for-resistant-nonunion-of-the-distal-radius
#5
Mark Henry
BACKGROUND: Nonunion involving the metaphyseal region of the distal radius is exceedingly rare, usually involving co-morbidity. Patients that have failed multiple prior conventional surgical interventions represent an even more difficult subset to treat; this investigation examined the utility of a specially designed free vascularized medial femoral condyle flap consisting of a central structural block graft with an extended corticoperiosteal sleeve to wrap around the junctions. METHODS: Six patients (5 males, 1 female) with a mean age of 52 years had failed to achieve union involving the distal radius metaphysis after a mean of 3...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28203542/robotic-trans-atrial-and-trans-mitral-ventricular-septal-resection
#6
REVIEW
W Randolph Chitwood
Localized ventricular septal hypertrophy, also known as idiopathic hypertrophic subaortic stenosis or idiopathic hypertrophic subaortic septal obstruction (IHSS), can create severe ventricular outflow obstruction. This often results in a high sub-aortic pressure gradient with potentially lethal symptoms. In 1960, Braunwald described the hemodynamic characteristics of IHSS, and thereafter, Morrow developed a trans-aortic approach to resect a large part of the ventricular septum, enlarging the outflow tract. The Morrow operation has remained the gold standard for surgically treating this pathology...
January 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28203021/-comparision-for-clinical-efficiency-of-continuous-adductor-canal-block-and-femoral-nerve-block-in-total-knee-arthroplasty
#7
M W Zhao, N Wang, L Zeng, M Li, Z K Zhao, H Zhang, H Tian
OBJECTIVE: To compare the pain control efficiency of continuous adductor canal block (ACB) and femoral nerve block (FNB) in total knee arthroplasty. METHODS: From April to September 2016, patients with severe knee osteoarthritis undergoing primary unilateral total knee arthroplasty (TKA) were prospectively observed, and all the patients were randomized received ultrasound-guided continuous ACB or FNB after surgery. Numeric pain rating scales(NPRS)pain scores in rest and activity 2, 6, 12, 24 and 48 h after surgery were collected, and the preoperative and postoperative quadriceps strength at 24 and 48 h were analyzed...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28203020/-effect-of-continuous-femoral-nerve-block-combined-with-periarticular-local-infiltration-analgesia-on-early-operative-functional-recovery-after-total-knee-arthroplasty-a-randomized-double-blind-controlled-study
#8
Y Deng, T L Jiang, X X Yang, M Li, J Wang, X Y Guo
OBJECTIVE: To investigate the effects of early rehabilitation training after total knee arthroplasty surgery by continuous femoral nerve block (CFNB) with or without periarticular local infiltration analgesia (PLIA). METHODS: In this randomized, double-blind, controlled study, 100 patients under-going primary unilateral total knee arthroplasty in patients with knee osteoarthritis were enrolled. All the patients received CFNB for postoperative analgesia before combined spinal epidural anesthesia...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202762/maternal-binding-and-neutralizing-igg-responses-targeting-the-c-terminal-region-of-the-v3-loop-are-predictive-of-reduced-peripartum-hiv-1-transmission-risk
#9
David R Martinez, Nathan Vandergrift, Ayooluwa O Douglas, Erin McGuire, John Bainbridge, Nathan I Nicely, David C Montefiori, Georgia D Tomaras, Genevieve G Fouda, Sallie R Permar
The development of an effective maternal HIV-1 vaccine that could synergize with antiretroviral therapy (ART) to eliminate pediatric HIV-1 infection will require the characterization of maternal immune responses capable of blocking transmission of autologous HIV viruses to the infant. We previously identified that maternal plasma antibody binding to linear epitopes within the variable loop 3 (V3) region of HIV envelope (Env) and neutralizing responses against easy to neutralize tier 1 viruses were associated with reduced risk of peripartum HIV infection in the historic U...
February 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28198510/letter-partial-diallel-crosses-for-predicting-yield-of-semiexotic-maize-populations
#10
C M Silva, J B Miranda Filho, U C Mendes, E F Reis
In Brazil, the total production of maize has increased continuously due to the advances in technology but also to the new frontiers for the maize crop, including the expansion of the second crop (safrinha; usually maize after soybean). Therefore, the exploitation of new sources of germplasm seems to be imperative to attend the actual and future demands for modern cultivars adapted to the greatly variable environments available to the maize crop. The present study was based on a partial diallel (intergroup) cross to provide quantitative information on the potential of two groups of varieties (NAP - exotics and HG - local) and their combining abilities to direct the synthesis of new populations to be used in hybrid crosses or as a base for breeding programs...
February 8, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28197553/the-role-of-sirt1-in-epileptogenesis
#11
Alicia M Hall, Gary P Brennan, Tiffany M Nguyen, Akanksha Singh-Taylor, Hyun-Seung Mun, Mary J Sargious, Tallie Z Baram
The mechanisms by which brain insults lead to subsequent epilepsy remain unclear. Insults, including trauma, stroke, tumors, infections, and long seizures [status epilepticus (SE)], create a neuronal state of increased metabolic demand or decreased energy supply. Neurons express molecules that monitor their metabolic state, including sirtuins (Sirts). Sirtuins deacetylate cytoplasmic proteins and nuclear histones, and their epigenetic modulation of the chromatin governs the expression of many genes, influencing neuronal properties...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28197300/long-term-treatment-of-native-ldl-induces-senescence-of-cultured-human-endothelial-cells
#12
Sung-Tack Oh, Hoon Park, Hyun Joong Yoon, Sung Yeul Yang
The study aimed to evaluate whether the treatment of primary cultured human endothelial cells with native low-density lipoprotein (nLDL) could induce their senescence and to uncover some of the putative mechanisms involved. For this purpose, human umbilical vein endothelial cells (HUVECs) were subcultured and/or continuously cultured with nLDL (0, 2, 5, and 10 μg protein/mL), for up to 9 days. The results indicated that nLDL inhibited the proliferation of HUVECs by arresting the cell cycle at G1 phase. The G1-arrested cells showed increase in cytosolic senescence-associated-β-galactosidase (SA-β-Gal) activity, a biomarker of cellular senescence...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28196414/polyelectrolyte-fiber-assembly-of-plant-derived-spider-silk-like-proteins
#13
Congyue Annie Peng, Julia A Russo, Todd A Lyda, William Richard Marcotte
Spider dragline silk is a proteinaceous material that combines superior toughness and biocompatibility, a promising bio-material. The distinct protein structure and the fiber formation process contribute to the superior toughness of dragline silk. Previously, we have produced recombinant spider silk-like proteins in transgenic tobacco that are readily purified from plant extracts. The plant-derived spidroin-like proteins consisted of native major ampullate spidroin 1 or spidroin 2 N- and C-termini flanking 8, 16, or 32 copies of their respective consensus block repeats (mini-spidroins)...
February 14, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28194749/apical-transportation-of-proglider-and-protaper-next-activated-with-different-motions
#14
Hakan Arslan, Damla O Kırıcı, Ahmet D Uygun, Ruslan Khalilov, Yahya Güven, Ertuğrul Karataş, Halit Aladağ
PURPOSE: The aim of this study was to investigate the apical transportation of the ProGlider and ProTaper Next using 3 different motions (150° clockwise [CW]; 0° counter clockwise [CCW], 270° CW-30° CCW; and [360° CW] continuous rotation). MATERIALS AND METHODS: 36 simulated, curved, plastic training blocks were randomly distributed into 3 groups for treatment according to the movement kinematics used for ProGlider (Dentsply Maillefer) followed by ProTaper Next (Dentsply Maillefer) instruments (n = 12): 150° CW-30° CCW, 270° CW-30° CCW, and 360° CW (continuous rotation)...
February 11, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28191030/comparison-of-functional-connectivity-estimated-from-concatenated-task-state-data-from-block-design-paradigm-with-that-of-continuous-task
#15
Yang Zhu, Lin Cheng, Naying He, Yang Yang, Huawei Ling, Hasan Ayaz, Shanbao Tong, Junfeng Sun, Yi Fu
Functional connectivity (FC) analysis with data collected as continuous tasks and activation analysis using data from block-design paradigms are two main methods to investigate the task-induced brain activation. If the concatenated data of task blocks extracted from the block-design paradigm could provide equivalent FC information to that derived from continuous task data, it would shorten the data collection time and simplify experimental procedures, and the already collected data of block-design paradigms could be reanalyzed from the perspective of FC...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28188815/the-impact-of-emotion-intensity-on-recognition-memory-valence-polarity-matters
#16
Xianxin Meng, Ling Zhang, Wenwen Liu, XinSheng Ding, Hong Li, Jiemin Yang, JiaJin Yuan
Although the effects of emotion of different emotional intensity on memory have been investigated, it remain unclear whether the influence of emotional intensity on memory varies depending on the stimulus valence polarity (i.e., positive or negative). To address this, event-related potentials were recorded when subjects performed a continuous old/new discrimination task, for highly negative (HN), mildly negative (MN) and neutral pictures in the negative block; and for highly positive (HP), mildly positive (MP) and neutral pictures in the positive block...
February 7, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28186908/pseudo-asynchronous-level-crossing-adc-for-ecg-signal-acquisition
#17
T Marisa, T Niederhauser, A Haeberlin, R A Wildhaber, R Vogel, J Goette, M Jacomet
A new pseudo asynchronous level crossing analogue-to-digital converter (adc) architecture targeted for low-power, implantable, long-term biomedical sensing applications is presented. In contrast to most of the existing asynchronous level crossing adc designs, the proposed design has no digital-to-analogue converter (dac) and no continuous time comparators. Instead, the proposed architecture uses an analogue memory cell and dynamic comparators. The architecture retains the signal activity dependent sampling operation by generating events only when the input signal is changing...
February 7, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28185795/paraplegia-after-accidental-continuous-subdural-analgesia
#18
Jie Chen, Yafang Hu, Liang Lv
Almost all reported cases of unintentional subdural block have described a reversible disorder. We report a patient who developed an incomplete mixed sensory and motor neurological deficit after accidental continuous subdural infusion of 0.1% levobupivacaine given to provide postoperative analgesia after cesarean section. Our report shows that accidental continuous subdural injection can cause permanent neurological sequelae. In the event of suspected compressive neural damage, subdural fluid accumulation, although very rare, should be considered...
December 22, 2016: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28183572/cervical-sympathetic-blockade-for-the-management-of-electrical-storm
#19
Rehan Ali, Jeffrey Ciccone, Victor Tseng
A 75-year-old man presented with dizziness and fatigue secondary to ventricular and supraventricular arrhythmias. He underwent an elective ablation but continued to suffer from ventricular tachycardia with cardiovascular instability despite antiarrhythmic therapy with multiple agents. The patient continued to develop episodes of ventricular tachycardia and an episode of ventricular fibrillation. Electrical storm encompasses a situation of cardiac instability which may present as several episodes of ventricular tachycardia or ventricular fibrillation in a short period...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28182470/supported-education-for-individuals-with-psychiatric-disabilities-state-of-the-practice-and-policy-implications
#20
Heather Ringeisen, Marsha Langer Ellison, Amy Ryder-Burge, Kathleen Biebel, Shums Alikhan, Emily Jones
OBJECTIVE: Supported education (SEd) is a promising practice that supports and encourages educational goals and attainment among individuals with psychiatric disabilities. This paper provides insights into how SEd objectives are pursued in different settings, assesses the evidence base, and discusses policy implications. METHOD: Insights from 3 data sources were synthesized: published literature, an environmental scan, and 3 site visits to programs that support the education goals of individuals with psychiatric disabilities...
February 9, 2017: Psychiatric Rehabilitation Journal
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