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https://www.readbyqxmd.com/read/28534873/molecular-indicators-of-stress-induced-neuroinflammation-in-a-mouse-model-simulating-features-of-post-traumatic-stress-disorder
#1
S Muhie, A Gautam, N Chakraborty, A Hoke, J Meyerhoff, R Hammamieh, M Jett
A social-stress mouse model was used to simulate features of post-traumatic stress disorder (PTSD). The model involved exposure of an intruder (male C57BL/6) mouse to a resident aggressor (male SJL) mouse for 5 or 10 consecutive days. Transcriptome changes in brain regions (hippocampus, amygdala, medial prefrontal cortex and hemibrain), blood and spleen as well as epigenome changes in the hemibrain were assayed after 1- and 10-day intervals following the 5-day trauma or after 1- and 42-day intervals following the 10-day trauma...
May 23, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28534044/hsp-and-deafness-neurocristopathy-caused-by-a-novel-mosaic-sox10-mutation
#2
Sandra Donkervoort, Diana Bharucha-Goebel, Pomi Yun, Ying Hu, Payam Mohassel, Ahmet Hoke, Wadih M Zein, Daniel Ezzo, Andrea M Atherton, Ann C Modrcin, Majed Dasouki, A Reghan Foley, Carsten G Bönnemann
OBJECTIVE: To identify the underlying genetic cause in 2 sisters affected with progressive lower extremity spasticity, neuropathy, and early-onset deafness. METHODS: Whole-exome sequencing was performed, and segregation testing of variants was investigated using targeted Sanger sequencing. An inherited paternal mosaic mutation was further evaluated through quantitative analysis of the ratio of mutant vs wild-type allele in genomic DNA from various tissues, including blood, dermal fibroblasts, and saliva...
June 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28529212/exploring-the-case-for-eminent-domain-of-hepatitis-c-virus-treatment-patents
#3
T Joseph Mattingly Ii, Emily L Heil, Kathleen S Hoke
Hepatitis C virus (HCV) is a silent epidemic affecting millions of patients and represents the leading indication for liver transplantation in the United States and worldwide. New direct-acting antiviral agents offer the potential to cure patients infected with HCV but it comes at a staggering cost. Given the recent attention to these high-priced HCV therapies and the impact treating individuals with HCV is having on drug expenditures in the United States, there may be a need to revisit drug patent laws and the options the federal government has to ensure patient access to care...
2017: Journal of Health Care for the Poor and Underserved
https://www.readbyqxmd.com/read/28487425/a-variant-pfcrt-isoform-can-contribute-to-plasmodium-falciparum-resistance-to-the-first-line-partner-drug-piperaquine
#4
Satish K Dhingra, Devasha Redhi, Jill M Combrinck, Tomas Yeo, John Okombo, Philipp P Henrich, Annie N Cowell, Purva Gupta, Matthew L Stegman, Jonathan M Hoke, Roland A Cooper, Elizabeth Winzeler, Sachel Mok, Timothy J Egan, David A Fidock
Current efforts to reduce the global burden of malaria are threatened by the rapid spread throughout Asia of Plasmodium falciparum resistance to artemisinin-based combination therapies, which includes increasing rates of clinical failure with dihydroartemisinin plus piperaquine (PPQ) in Cambodia. Using zinc finger nuclease-based gene editing, we report that addition of the C101F mutation to the chloroquine (CQ) resistance-conferring PfCRT Dd2 isoform common to Asia can confer PPQ resistance to cultured parasites...
May 9, 2017: MBio
https://www.readbyqxmd.com/read/28485482/deletion-of-sarm1-gene-is-neuroprotective-in-two-models-of-peripheral-neuropathy
#5
Elliot Turkiew, Debbie Falconer, Nicole Reed, Ahmet Höke
Distal axon degeneration seen in many peripheral neuropathies is likely to share common molecular mechanisms with Wallerian degeneration. Although several studies in mouse models of peripheral neuropathy showed prevention of axon degeneration in the slow Wallerian degeneration (Wlds) mouse, the role of a recently identified player in Wallerian degeneration, Sarm1, has not been explored extensively. In this study we show that mice lacking the Sarm1 gene are resistant to distal axonal degeneration in a model of chemotherapy induced peripheral neuropathy caused by paclitaxel and a model of high fat diet induced putative metabolic neuropathy...
May 9, 2017: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/28476398/a-wound-complication-after-percutaneous-achilles-tendon-lengthening-requiring-surgical-excision-a-case-report
#6
Tiffany K Hoh, Rex W Hung, John S Steinberg, Katherine M Raspovic
A percutaneous tendo-Achilles lengthening procedure corrects limited ankle joint equinus by decreasing the pull of the triceps surae complex. The standard technique using 3-incision hemisection described by Hoke is often used in patients with diabetes because of the minimal number of incisions and low risk of wound complications. We describe a patient who underwent percutaneous tendo-Achilles lengthening with a resultant open wound complication requiring staged surgical debridement.
May 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28475650/deficiency-of-adaptive-immunity-does-not-interfere-with-wallerian-degeneration
#7
Christopher R Cashman, Ahmet Hoke
Following injury, distal axons undergo the process of Wallerian degeneration, and then cell debris is cleared to create a permissive environment for axon regeneration. The innate and adaptive immune systems are believed to be critical for facilitating the clearance of myelin and axonal debris during this process. However, immunodeficient animal models are regularly used in transplantation studies investigating cell therapies to modulate the degenerative/regenerative response. Given the importance of the immune system in preparing a permissive environment for regeneration by clearing debris, animals lacking, in part or in full, a functional immune system may have an impaired ability to regenerate due to poor myelin clearance, and may, thus, be poor hosts to study modulators of regeneration and degeneration...
2017: PloS One
https://www.readbyqxmd.com/read/28446508/enrichment-of-pik3-akt-mtor-pathway-activation-in-hepatic-metastases-from-breast-cancer
#8
Mariaelena Pierobon, Corrine Ramos, Shukmei Wong, K Alex Hodge, Jessica Aldrich, Sara A Byron, Stephen P Anthony, Nicholas J Robert, Donald W Northfelt, Mohammad Jahanzeb, Linda Vocila, Julia D Wulfkuhle, Guido Gambara, Rosa Isela Gallagher, Bryant Dunetz, Nicholas Hoke, Ting Dong, David W Craig, Massimo Cristofanilli, Brian Leyland Jones, Lance Liotta, Joyce A O'Shaughnessy, John D Carpten, Emanuel F Petricoin
Purpose: Little is known about the molecular signatures associated with specific metastatic sites in breast cancer. Using comprehensive multi-omic molecular profiling, we assessed whether alterations or activation of the PI3K-AKT-mTOR pathway is associated with specific sites of breast cancer metastasis. <p>Experimental Design: NGS-based whole exome sequencing was coupled with Reverse Phase Protein Microarray (RPPA) functional signaling network analysis to explore the PI3K-AKT-mTOR axis in 32 pretreated breast cancer metastases...
April 26, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28426967/an-intrinsic-epigenetic-barrier-for-functional-axon-regeneration
#9
Yi-Lan Weng, Ran An, Jessica Cassin, Jessica Joseph, Ruifa Mi, Chen Wang, Chun Zhong, Seung-Gi Jin, Gerd P Pfeifer, Alfonso Bellacosa, Xinzhong Dong, Ahmet Hoke, Zhigang He, Hongjun Song, Guo-Li Ming
Mature neurons in the adult peripheral nervous system can effectively switch from a dormant state with little axonal growth to robust axon regeneration upon injury. The mechanisms by which injury unlocks mature neurons' intrinsic axonal growth competence are not well understood. Here, we show that peripheral sciatic nerve lesion in adult mice leads to elevated levels of Tet3 and 5-hydroxylmethylcytosine in dorsal root ganglion (DRG) neurons. Functionally, Tet3 is required for robust axon regeneration of DRG neurons and behavioral recovery...
April 19, 2017: Neuron
https://www.readbyqxmd.com/read/28388628/mating-patterns-and-post-mating-isolation-in-three-cryptic-species-of-the-engystomops-petersi-species-complex
#10
Paula A Trillo, Andrea E Narvaez, Santiago R Ron, Kim L Hoke
Determining the extent of reproductive isolation in cryptic species with dynamic geographic ranges can yield important insights into the processes that generate and maintain genetic divergence in the absence of severe geographic barriers. We studied mating patterns, propensity to hybridize in nature and subsequent fertilization rates, as well as survival and development of hybrid F1 offspring for three nominal species of the Engystomops petersi species complex in Yasuní National Park, Ecuador. We found at least two species in four out of six locations sampled, and 14...
2017: PloS One
https://www.readbyqxmd.com/read/28383353/mock-institutional-review-board-promoting-analytical-and-reasoning-skills-in-research-ethics
#11
Jean Dowling Dols, Mary M Hoke, Maureen L Rauschhuber
Although it is critical that nurses possess ethical reasoning skills for research, there is limited information on effective strategies to develop these skills in graduate health care students. A research study analyzing educational interventions including the effect of online human subjects training followed by a mock institutional review board simulation demonstrated that knowledge acquisition is not enough to acquire the ethical reasoning skills needed to implement health care research. Situational context is also needed to envision the application of ethical principles...
April 5, 2017: Nurse Educator
https://www.readbyqxmd.com/read/28369292/large-vessel-vasculitis-in-beh%C3%A3-et-s-disease
#12
Georg Goliasch, Matthias Hoke
No abstract text is available yet for this article.
June 1, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28348011/office-blood-pressure-and-cardiovascular-disease-pathophysiologic-implications-for-diagnosis-and-treatment
#13
REVIEW
Jay N Cohn, Daniel A Duprez, Lynn Hoke, Natalia Florea, Sue Duval
No abstract text is available yet for this article.
May 2017: Hypertension
https://www.readbyqxmd.com/read/28343854/effect-of-maryland-s-2011-alcohol-sales-tax-increase-on-alcohol-positive-driving
#14
Marie-Claude Lavoie, Patricia Langenberg, Andres Villaveces, Patricia C Dischinger, Linda Simoni-Wastila, Kathleen Hoke, Gordon S Smith
INTRODUCTION: The 2011 Maryland alcohol sales tax increase from 6% to 9% provided an opportunity to evaluate the impact on rates of alcohol-positive drivers involved in injury crashes. METHODS: Maryland police crash reports from 2001 to 2013 were analyzed using an interrupted time series design and a multivariable analysis employing generalized estimating equations models with a negative binomial distribution. Data were analyzed in 2014-2015. RESULTS: There was a significant gradual annual reduction of 6% in the population-based rate of all alcohol-positive drivers (p<0...
March 8, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28336545/changes-in-intestinal-microbiota-composition-and-metabolism-coincide-with-increased-intestinal-permeability-in-young-adults-under-prolonged-physiologic-stress
#15
J Philip Karl, Lee M Margolis, Elisabeth H Madslien, Nancy E Murphy, John W Castellani, Yngvar Gundersen, Allison V Hoke, Michael W Levangie, Raina Kumar, Nabarun Chakraborty, Aarti Gautam, Rasha Hammamieh, Svein Martini, Scott J Montain, Stefan M Pasiakos
The magnitude, temporal dynamics, and physiologic effects of intestinal microbiome responses to physiologic stress are poorly characterized. This study used a systems biology approach and multiple-stressor military training environment to determine the effects of physiologic stress on intestinal microbiota composition and metabolic activity, and intestinal permeability (IP). 73 Soldiers were provided three rations/d with or without protein- or carbohydrate-based supplements during a four day cross-country ski march (STRESS)...
March 23, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28274575/relation-of-myocardial-contrast-enhanced-t1-mapping-by-cardiac-magnetic-resonance-to-left-ventricular-reverse-remodeling-after-cardiac-resynchronization-therapy-in-patients-with-nonischemic-cardiomyopathy
#16
Ulas Höke, Mand J H Khidir, Rob J van der Geest, Martin J Schalij, Jeroen J Bax, Victoria Delgado, Nina Ajmone Marsan
Myocardial scar is known to be associated with limited left ventricular (LV) reverse remodeling after cardiac resynchronization therapy (CRT). However, the impact of diffuse myocardial interstitial fibrosis, as assessed with myocardial T1 mapping cardiac magnetic resonance (CMR), has not been studied in patients with CRT. Therefore, we aimed at evaluating the association between diffuse myocardial interstitial fibrosis, in nonischemic cardiomyopathy patients, and LV reverse remodeling after CRT. A total of 40 patients (61 ± 11 years) with nonischemic cardiomyopathy who underwent CMR before CRT implantation were included...
May 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28108550/cardiac-resynchronization-therapy-in-adults-with-congenital-heart-disease
#17
Zeliha Koyak, Joris R de Groot, Ahmed Krimly, Tara M Mackay, Berto J Bouma, Candice K Silversides, Erwin N Oechslin, Ulas Hoke, Lieselot van Erven, Werner Budts, Isabelle C Van Gelder, Barbara J M Mulder, Louise Harris
AIMS: In adults with congenital heart disease (CHD) heart failure is one of the leading causes of morbidity and mortality but experience with and reported outcome of cardiac resynchronization therapy (CRT) is limited. We investigated the efficacy of CRT in adults with CHD. METHODS AND RESULTS: This was a retrospective study including 48 adults with CHD who received CRT since 2003 in four tertiary referral centres. Responders were defined as patients who showed improvement in NYHA functional class and/or systemic ventricular ejection fraction by at least one category...
January 20, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28106647/estimation-of-uterine-size-how-accurate-are-we
#18
Tanya P Hoke, Babak Vakili
OBJECTIVE: To evaluate the accuracy of gynecologic surgeons at estimating uterine dimensions and weight. METHODS: Six model uteri of various sizes were created to simulate the size and consistency of a uterus and displayed at 3 stations. The visual station (VS) comprised 2 specimens placed on an unmarked table. The laparoscopic station (LS) consisted of 2 model uteri, each placed in a separate simulated abdomen with a 0 degree laparoscope and 2 operative trocars with standard instruments...
May 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28103900/gde2-is-essential-for-neuronal-survival-in-the-postnatal-mammalian-spinal-cord
#19
Clinton Cave, Sungjin Park, Marianeli Rodriguez, Mai Nakamura, Ahmet Hoke, Mikhail Pletnikov, Shanthini Sockanathan
BACKGROUND: Glycerophosphodiester phosphodiesterase 2 (GDE2) is a six-transmembrane protein that cleaves glycosylphosphatidylinositol (GPI) anchors to regulate GPI-anchored protein activity at the cell surface. In the developing spinal cord, GDE2 utilizes its enzymatic function to regulate the production of specific classes of motor neurons and interneurons; however, GDE2's roles beyond embryonic neurogenesis have yet to be defined. METHOD: Using a panel of histological, immunohistochemical, electrophysiological, behavioral, and biochemistry techniques, we characterized the postnatal Gde2 (-/-) mouse for evidence of degenerative neuropathology...
January 19, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/27912838/evolutionary-perspectives-introduction-to-the-special-issue-on-axon-regeneration-across-species
#20
EDITORIAL
Zhigang He, Ahmet Höke
No abstract text is available yet for this article.
January 2017: Experimental Neurology
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