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https://www.readbyqxmd.com/read/28324946/characterization-of-motor-cortex-activity-of-the-lower-limb-region
#1
Fadi Mikhail, Karthikeyan Balasubramanian, Matthew D Best, Kazutaka Takahashi, Nicholas G Hatsopoulos
Understanding the functional properties of the motor cortex is a key step to developing effective neuroprosthetic and computer interfaces for amputees and patients with spinal cord injury. Most efforts have been directed towards studying the upper limb region of the motor cortex. Little has been done in the way of addressing lower limb motor cortical physiology. In this study, we implanted multiple microelectrode arrays along the central sulcus in the primary motor cortex of a macaque monkey. Using intracortical microstimulation, we identified neurons that evoked leg movements, either exclusively or mostly, and we studied their firing activity during a center-out arm movement task...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324877/association-of-adherence-to-a-healthy-diet-with-cognitive-decline-in-european-and-american-older-adults-a-meta-analysis-within-the-chances-consortium
#2
Agnes A M Berendsen, Jae H Kang, Ondine van de Rest, Nicole Jankovic, Ellen Kampman, Jessica C Kiefte-de Jong, Oscar H Franco, M Arfan Ikram, Hynek Pikhart, Lena Maria Nilsson, Hermann Brenner, Paolo Boffetta, Snorri Bjorn Rafnsson, Deborah Gustafson, Andreas Kyrozis, Antonia Trichopoulou, Edith J M Feskens, Francine Grodstein, Lisette C P G M de Groot
AIM: To examine the association between a healthy diet, assessed by the Healthy Diet Indicator (HDI), and cognitive decline in older adults. METHODS: Data from 21,837 participants aged ≥55 years from 3 cohorts (Survey in Europe on Nutrition and the Elderly, a Concerted Action [SENECA], Rotterdam Study [RS], Nurses' Health Study [NHS]) were analyzed. HDI scores were based on intakes of saturated fatty acids, polyunsaturated fatty acids, mono- and disaccharides, protein, cholesterol, fruits and vegetables, and fiber...
March 22, 2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/28324060/expression-of-pd-1-and-pd-l1-in-anaplastic-thyroid-cancer-patients-treated-with-multimodal-therapy-results-from-a-retrospective-study
#3
Ashish V Chintakuntlawar, Kandelaria M Rumilla, Carin Y Smith, Sarah M Jenkins, Robert L Foote, Jan L Kasperbauer, John C Morris, Mabel Ryder, Samer Alsidawi, Crystal Hilger, Keith C Bible
Context: Anaplastic thyroid cancer (ATC) is rare and a highly fatal malignancy. The role of PD-1 and PD-L1 as prognostic and/or predictive marker in ATC is unknown. Objective: Multimodal therapy offers the best chance at tumor control. Objective of this study was to detect potential associations of PD-1/PD-L1 axis variables with outcome data in ATC. Design: Retrospective study of a uniformly treated cohort. Setting: Single institution retrospective cohort study...
March 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323752/impact-of-opioid-substitution-therapy-on-the-hiv-prevention-benefit-of-antiretroviral-therapy-for-people-who-inject-drugs
#4
Christinah Mukandavire, Andrea Low, Gitau Mburu, Adam Trickey, Margaret T May, Charlotte F Davies, Clare E French, Katharine J Looker, Tim Rhodes, Lucy Platt, Andy Guise, Matthew Hickman, Peter Vickerman
OBJECTIVE: A recent meta-analysis suggested that opioid substitution therapy (OST) increased uptake of anti-retroviral treatment (ART) and HIV viral suppression. We modelled whether OST could improve the HIV prevention benefit achieved by ART amongst people who inject drugs (PWID). METHODS: We modelled how introducing OST could improve the coverage of ART across a PWID population for different baseline ART coverage levels. Using existing data on how yearly HIV-transmission risk is related to HIV plasma viral load, changes in the level of viral suppression across the population were used to project the relative reduction in yearly HIV-transmission risk achieved by ART, with or without OST, compared to if there was no ART - defined here as the prevention effectiveness of ART...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28323366/nonribosomal-peptide-synthesis-principles-and-prospects
#5
REVIEW
Roderich D Süssmuth, Andi Mainz
Nonribosomal peptide synthetases (NRPSs) are large multienzyme machineries that assemble numerous peptides with large structural and functional diversity. These peptides include more than 20 marketed drugs, such as antibacterials (penicillin, vancomycin), antitumor compounds (bleomycin), and immunosuppressants (cyclosporine). Over the past few decades biochemical and structural biology studies have gained mechanistic insights into the highly complex assembly line of nonribosomal peptides. This Review provides state-of-the-art knowledge on the underlying mechanisms of NRPSs and the variety of their products along with detailed analysis of the challenges for future reprogrammed biosynthesis...
March 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28319848/treatment-of-premenstrual-dysphoric-disorder-with-the-gabaa-receptor-modulating-steroid-antagonist-sepranolone-uc1010-a-randomized-controlled-trial
#6
Marie Bixo, Karin Ekberg, Inger Sundström Poromaa, Angelica Lindén Hirschberg, Aino Fianu Jonasson, Lotta Andréen, Erika Timby, Marianne Wulff, Agneta Ehrenborg, Torbjörn Bäckström
CONTEXT: Allopregnanolone is a metabolite from progesterone and a positive modulator of the GABAA receptor. This endogenous steroid may induce negative mood in sensitive women when present in serum levels comparable to the premenstrual phase. Its endogenous isomer, isoallopregnanolone, has been shown to antagonize allopregnanolone effects in experimental animal and human models. OBJECTIVE: The objective was to test whether inhibition of allopregnanolone by treatment with the GABAA modulating steroid antagonist (GAMSA) Sepranolone (UC1010) during the premenstrual phase could reduce symptoms of the premenstrual dysphoric disorder (PMDD)...
March 1, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28319501/18f-fluorocholine-pet-ct-brain-mri-and-5-aminolevulinic-acid-for-the-assessment-of-tumor-resection-in-high-grade-glioma
#7
Ana María García Vicente, Fátima Jiménez Aragón, Maikal Villena Martín, German Andrés Jiménez Londoño, Jose María Borrás Moreno
High-grade glioma is a very aggressive and infiltrative tumor in which complete resection is a chance for a better outcome. We present the case of a 57-year-old man with a brain lesion suggestive of high-grade glioma. Brain MRI and F-fluorocholine PET/CT were performed previously to plan the surgery. Surgery was microscope assisted after the administration of 5-aminolevulinic acid. Postsurgery brain MRI and PET were blind evaluated to the surgery results and reported as probably gross total resection.
March 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28319358/albendazole-therapy-in-human-lung-and-liver-hydatid-cysts-a-13-year-experience
#8
Seyed Hossein Fattahi Masoom, Shahrzad Mohammadzadeh Lari, Asieh Sadat Fattahi, Negin Ahmadnia, Mahla Rajabi, Maliheh NaderiKalat
BACKGROUND: Cystic echinococcosis (CE) is an endemic disease in Iran. This study has aimed to report the efficacy of Albendazole therapy in patients with CE. METHOD: Among 164 patients with echinococcosis who were referred to the surgery clinic, Ghaem hospital, Mashhad University of Medical Sciences between 2001 and 2013, two were diagnosed with alveolar echinococcosis (AE) and 162 with CE; 43 of whom underwent surgery. The rest 119 patients received medical therapy by Albendazole 15 mg/kg/day for three phases...
March 20, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28319229/patient-mortality-during-unannounced-accreditation-surveys-at-us-hospitals
#9
Michael L Barnett, Andrew R Olenski, Anupam B Jena
Importance: In the United States, hospitals receive accreditation through unannounced on-site inspections (ie, surveys) by The Joint Commission (TJC), which are high-pressure periods to demonstrate compliance with best practices. No research has addressed whether the potential changes in behavior and heightened vigilance during a TJC survey are associated with changes in patient outcomes. Objective: To assess whether heightened vigilance during survey weeks is associated with improved patient outcomes compared with nonsurvey weeks, particularly in major teaching hospitals...
March 20, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28319018/the-effect-of-elevated-progesterone-levels-before-hcg-triggering-in-modified-natural-cycle-frozen-thawed-embryo-transfer-cycles
#10
Eva R Groenewoud, Nick S Macklon, Ben J Cohlen
Recent studies suggest that elevated late follicular phase progesterone concentrations after ovarian stimulation for IVF may result in embryo-endometrial asynchrony, reducing the chance of successful implantation after fresh embryo transfer. It remains unclear to what extent elevated late follicular phase progesterone levels may occur in unstimulated cycles before frozen-thawed embryo transfer, or what affect they may have on outcomes. In this cohort study, 271 patients randomized to the modified natural cycle arm of a randomized controlled trial comparing two endometrial preparation regimens underwent late follicular phase progesterone and LH testing...
February 28, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28318381/seroprevalence-of-toxoplasma-gondii-in-american-black-bears-ursus-americanus-of-the-central-appalachians-usa
#11
John J Cox, Sean M Murphy, Ben C Augustine, Joseph M Guthrie, John T Hast, Sutton C Maehr, Joseph McDermott
We assessed Toxoplasma gondii seroprevalence in 53 free-ranging American black bears ( Ursus americanus ) in the Central Appalachian Mountains, US. Seroprevalence was 62% with no difference between males and females or between juvenile and adult bears. Wildlife agencies should consider warnings in hunter education programs to reduce the chances for human infection from this source.
March 20, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28318255/excited-state-decay-paths-in-tetraphenylethene-derivatives
#12
Yuan-Jun Gao, Xue-Ping Chang, Xiang-Yang Liu, Quan-Song Li, Ganglong Cui, Walter Thiel
The photophysical properties of tetraphenylethene (TPE) compounds may differ widely depending on the substitution pattern, for example with regard to the fluorescence quantum yield phi_f and the propensity to exhibit aggregation-induced emission (AIE). We report combined electronic structure calculations and nonadiabatic dynamics simulations to study the excited-state decay mechanisms of two TPE derivatives with four methyl substituents, either in meta-position (TPE-4mM, phi_f = 0.1%) or in ortho-position (TPE-4oM, phi_f = 64...
March 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28318007/myocardial-infarction-in-a-neonate-lessons-for-neonatal-and-internal-medicine
#13
Werner Streif
Due to the lack of evidence-based guidelines, management strategies for neonatal MI should be individualized and administered largely at the discretion of responsible treating teams. Supportive care with a focus on preserving adequate circulation and antithrombotic therapy with a view to restoring vascular patency are the mainstays of treatment. Thrombolytic therapy of neonatal MI includes a chance to completely restore myocardial function. Understanding the resilience of the neonatal heart and mechanism of cardiac cell repair in neonates may spark novel treatment strategies for severe MI in the large number of affected individuals in an aging population...
March 20, 2017: Hämostaseologie
https://www.readbyqxmd.com/read/28317876/extreme-adaptations-for-probable-visual-courtship-behaviour-in-a-cretaceous-dancing-damselfly
#14
Daran Zheng, André Nel, Edmund A Jarzembowski, Su-Chin Chang, Haichun Zhang, Fangyuan Xia, Haoying Liu, Bo Wang
Courtship behaviours, frequent among modern insects, have left extremely rare fossil traces. None are known previously for fossil odonatans. Fossil traces of such behaviours are better known among the vertebrates, e.g. the hypertelic antlers of the Pleistocene giant deer Megaloceros giganteus. Here we describe spectacular extremely expanded, pod-like tibiae in males of a platycnemidid damselfly from mid-Cretaceous Burmese amber. Such structures in modern damselflies, help to fend off other suitors as well as attract mating females, increasing the chances of successful mating...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317403/intrahepatic-cholangiocarcinoma-current-management-and-emerging-therapies
#15
Amir A Rahnemai-Azar, Allison B Weisbrod, Mary Dillhoff, Carl Schmidt, Timothy M Pawlik
Intrahepatic cholangiocarcinoma (iCCA) is a malignancy with an increasing incidence and a high-case fatality. While surgery offers the best hope at long-term survival, only one-third of tumors are amenable to surgical resection at the time of the diagnosis. Unfortunately, conventional chemotherapy offers limited survival benefit in the management of unresectable or metastatic disease. Recent advances in understanding the molecular pathogenesis of iCCA and the use of next-generation sequencing techniques have provided a chance to identify "target-able" molecular aberrations...
March 20, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28317234/esophageal-stasis-in-achalasia-patients-without-symptoms-after-treatment-does-not-predict-symptom-recurrence
#16
F B van Hoeij, A J P M Smout, A J Bredenoord
BACKGROUND: After achalasia treatment, a subset of patients has poor esophageal emptying without having symptoms. There is no consensus on whether to pre-emptively treat these patients. We hypothesized that, if left untreated, these patients will experience earlier symptom recurrence than patients without stasis. METHODS: 99 treated achalasia patients who were in clinical remission (Eckardt ≤3) at 3 months after treatment were divided into two groups, based on presence or absence of esophageal stasis on a timed barium esophagogram performed after 3 months...
March 20, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28317149/association-between-variants-in-genes-involved-in-the-immune-response-and-prostate-cancer-risk-in-men-randomized-to-the-finasteride-arm-in-the-prostate-cancer-prevention-trial
#17
Danyelle A Winchester, Cathee Till, Phyllis J Goodman, Catherine M Tangen, Regina M Santella, Teresa L Johnson-Pais, Robin J Leach, Jianfeng Xu, S Lilly Zheng, Ian M Thompson, M Scott Lucia, Scott M Lippman, Howard L Parnes, William B Isaacs, Angelo M De Marzo, Charles G Drake, Elizabeth A Platz
BACKGROUND: We reported that some, but not all single nucleotide polymorphisms (SNPs) in select immune response genes are associated with prostate cancer, but not individually with the prevalence of intraprostatic inflammation in the Prostate Cancer Prevention Trial (PCPT) placebo arm. Here, we investigated whether these same SNPs are associated with risk of lower- and higher-grade prostate cancer in men randomized to finasteride, and with prevalence of intraprostatic inflammation among controls...
March 20, 2017: Prostate
https://www.readbyqxmd.com/read/28316919/prevalence-of-dental-caries-based-on-personality-types-of-35-44-years-old-residents-in-davangere-city
#18
Puja C Yavagal, Hitashi Singla
AIM: To assess dental caries experience of different personality types of 35-44 years old residents in Davangere city. MATERIALS AND METHODS: A cross-sectional survey was conducted in field setting. Based on Jenkins Activity Survey Questionnaire(11) used to assess the personality types, a personality questionnaire was designed consisting of 20 items. Questionnaire was used to assess and categorize personality types as Type A, Type B and Type AB. Data were analyzed using SPSS software version 17...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28316283/combination-therapies-for-the-treatment-of-recurrent-central-giant-cell-lesion-in-the-maxilla-a-case-report
#19
Jefferson Paulo de Oliveira, Fernanda Olivete, Naylin Danyele de Oliveira, Allan Fernando Giovanini, João César Zielak, Leandro Klüppel, Rafaela Scariot
BACKGROUND: Central giant cell lesion is a non-neoplastic proliferation, usually asymptomatic, of unknown etiology. The purpose of this case report is to report the diagnosis and the treatment of a recurrent central giant cell lesion in the maxilla. CASE PRESENTATION: A 31-year-old Brazilian woman presented to our Surgery Service for evaluation of a cystic lesion in her teeth 13 and 15, although she had previously received endodontic treatment for her teeth 13 and 15 without regression of the lesion...
March 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28315479/biopsychosocial-influence-on-shoulder-pain-rationale-and-protocol-for-a-pre-clinical-trial
#20
Steven Z George, Roland Staud, Paul A Borsa, Samuel S Wu, Margaret R Wallace, Warren H Greenfield, Lauren N Mackie, Roger B Fillingim
BACKGROUND: Chronic musculoskeletal pain conditions are a prevalent and disabling problem. Preventing chronic musculoskeletal pain requires multifactorial treatment approaches that address its complex etiology. Prior cohort studies identified a high risk subgroup comprised of variation in COMT genotype and pain catastrophizing. This subgroup had increased chance of heightened pain responses (in a pre-clinical model) and higher 12month post-operatives pain intensity ratings (in a clinical model)...
March 14, 2017: Contemporary Clinical Trials
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