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https://www.readbyqxmd.com/read/28722762/rapid-depuration-of-mercury-in-songbirds-accelerated-by-feather-molt
#1
Margaret Whitney, Daniel Cristol
Mercury (Hg) is a ubiquitous environmental contaminant that affects avian reproduction and condition, in both aquatic and terrestrial species. Because Hg binds strongly to the keratin of growing feathers, molt is an important avenue for Hg elimination. We investigated the rate of depuration of Hg from songbird blood and organs (brain, kidney, liver, muscle) as a function of molt. We exposed 2 species of captive songbirds, European starling (Sturnus vulgaris) and zebra finch (Taeniopygia guttata), to environmentally relevant dietary Hg (1...
July 19, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28721834/the-interaction-between-nutrition-and-exercise-for-promoting-health-and-performance
#2
Oliver C Witard, Derek Ball
The theme of The Nutrition Society Spring Conference 2017 was on the interaction between nutrition and exercise for promoting healthy ageing, maintaining cognitive function and improving the metabolic health of the population. The importance of this theme is highlighted by the public health issues surrounding obesity, diabetes and the age-related loss of skeletal muscle mass (sarcopenia). The opening symposium provided a historical perspective of both invasive and non-invasive methodologies for measuring exercise energetics and energy balance...
July 19, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28720183/g-loc-warning-algorithms-based-on-emg-features-of-the-gastrocnemius-muscle
#3
Sungho Kim, Taehwan Cho, Yongkyun Lee, Hyojin Koo, Booyong Choi, Dongsoo Kim
BACKGROUND: G-induced loss of consciousness (G-LOC) is mainly caused by failure to sustain an oxygenated blood supply to the pilot's brain because of the sudden acceleration in the direction of the +Gz axis, and is considered a critical safety issue. The purpose of this study was to develop G-LOC warning algorithms based on monitoring electromyograms (EMG) of the gastrocnemius muscle on the calf. METHODS: EMG data was retrieved from a total of 67 pilots and pilot trainees of the Korean Air Force during high-G training on a human centrifugal simulator...
August 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28716227/mitochondrial-trna-genes-are-hotspots-for-mutations-in-a-cohort-of-patients-with-exercise-intolerance-and-mitochondrial-myopathy
#4
Yuanyuan Lu, Danhua Zhao, Sheng Yao, Shiwen Wu, Daojun Hong, Qingqing Wang, Jing Liu, Jan A M Smeitink, Yun Yuan, Zhaoxia Wang
OBJECTIVE: Mitochondrial myopathy (MM) is a relatively rare type of mitochondrial disorder characterized by predominant skeletal muscle involvement. Both mitochondrial DNA (mtDNA) and nuclear DNA (nDNA) mutations have been reported as the genetic causes of this disease. Here, we described the clinical and genetic features of a cohort of patients with MM. METHODS: We conducted a retrospective, single center study enrolling 22 patients with clinically and myopathologically diagnosed MM...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28716034/growth-arrest-specific-gene-2-in-tilapia-oreochromis-niloticus-molecular-characterization-and-functional-analysis-under-low-temperature-stress
#5
ChangGeng Yang, Fan Wu, Xing Lu, Ming Jiang, Wei Liu, Lijuan Yu, Juan Tian, Hua Wen
BACKGROUND: Growth arrest specific 2 (gas2) gene is a component of the microfilament system that plays a major role in the cell cycle, regulation of microfilaments, and cell morphology during apoptotic processes. However, little information is available on fish gas2. In this study, the tilapia (Oreochromis niloticus) gas2 gene was cloned and characterized for the first time. RESULTS: The open reading frame was 1020 bp, encoding 340 amino acids; the 5'-untranslated region (UTR) was 140 bp and the 3'-UTR was 70 bp, with a poly (A) tail...
July 17, 2017: BMC Molecular Biology
https://www.readbyqxmd.com/read/28715318/researching-fiber-networks-computational-modeling-of-complex-fibrous-tissue-geometries
#6
Sergey Makarov, Alvero Pascual Leone, Aapo Nummenmaa
Many types of human tissue-such as the brain and spinal cord of the central nervous system, the peripheral nervous system, and muscles, including the heart muscle-are fibrous in nature. Isotropic human models that assume homogeneous volumes for every individual tissue do not properly take this into account.
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28714121/acetylcholine-dependent-upregulation-of-task-1-channels-in-thalamic-interneurons-by-a-smooth-muscle-like-signalling-pathway
#7
Michael Leist, Susanne Rinné, Maia Datunashvili, Ania Aissaoui, Hans-Christian Pape, Niels Decher, Sven G Meuth, Thomas Budde
The dorsal part of the lateral geniculate nucleus (dLGN) is the main thalamic site for state-dependent transmission of visual information. Non-retinal inputs from the ascending arousal system and inhibition provided by γ-aminobutyric acid (GABA)ergic local circuit interneurons (INs) control neuronal activity within the dLGN. In particular, acetylcholine (ACh) depolarizes thalamocortical relay (TC) neurons by inhibiting two-pore domain potassium (K2P ) channels. Conversely, ACh also hyperpolarizes INs via an as-yet-unknown mechanism...
July 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28713914/systematic-identification-of-human-housekeeping-genes-possibly-useful-as-references-in-gene-expression-studies
#8
Maria Caracausi, Allison Piovesan, Francesca Antonaros, Pierluigi Strippoli, Lorenza Vitale, Maria Chiara Pelleri
The ideal reference, or control, gene for the study of gene expression in a given organism should be expressed at a medium‑high level for easy detection, should be expressed at a constant/stable level throughout different cell types and within the same cell type undergoing different treatments, and should maintain these features through as many different tissues of the organism. From a biological point of view, these theoretical requirements of an ideal reference gene appear to be best suited to housekeeping (HK) genes...
July 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28712907/skeletal-muscle-as-a-factor-contributing-to-better-stratification-of-older-patients-with-traumatic-brain-injury-a-retrospective-cohort-study
#9
Keita Shibahashi, Kazuhiro Sugiyama, Hidenori Hoda, Yuichi Hamabe
BACKGROUND: Traumatic brain injury (TBI) in older patients is becoming an increasing problem, and methods that help predict outcomes in this population are needed. The objective of this study was to evaluate skeletal muscle mass as a predictive marker for TBI outcome in older patients. METHODS: Older patients (≥60 years) with TBI were included in this study and clinical outcome was assessed using the Glasgow Outcome Scale (GOS) at six months post-injury. Patients were classified according to their GOS score as having good outcome (GOS 3-5) or poor outcome (GOS 1 and 2)...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28712376/grape-pomace-improves-performance-antioxidant-status-fecal-microbiota-and-meat-quality-of-piglets
#10
I Kafantaris, D Stagos, B Kotsampasi, A Hatzis, A Kypriotakis, K Gerasopoulos, S Makri, N Goutzourelas, C Mitsagga, I Giavasis, K Petrotos, S Kokkas, P Goulas, V Christodoulou, D Kouretas
In the present study, grape pomace (GP) was used as feed additive in the diet of weaned piglets in order to develop innovative feedstuffs and to investigate their potential beneficial effects on welfare, productivity and meat quality. For examining the antioxidant capacity of the experimental feeds, 24 piglets of 20 days old were assigned to two experimental groups receiving standard or experimental diet for 30 days. Blood and tissues collections were performed at four different time-points, 2, 20, 35 and 50 days post birth...
July 17, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28712313/compulsory-military-service-as-a-measure-of-later-physical-and-cognitive-performance-in-male-survivors-of-childhood-cancer
#11
Ritva Ahomäki, Arja Harila-Saari, Kai Parkkola, Jaakko Matomäki, Päivi M Lähteenmäki
BACKGROUND: Compromised physical fitness and cognitive difficulties have been reported as late effects of cancer treatment during childhood. To assess this issue, the military rankings of cancer survivors in medical checkups at call-up, and conscripts' physical and cognitive performance during the first weeks of compulsory military education were compared to those of matched population controls without a history of cancer. MATERIAL AND METHODS: A total of 1680 male patients born between 1960 and 1992 with a malignancy diagnosed before the age of 16 who were alive at the call-up age (18 years) were identified using the Finnish Cancer Registry, and five age, sex and place of residence matched controls for each patient using the Population Register Centre...
July 15, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28711796/oxidative-stress-in-the-hybrid-fish-jundiara-leiarius-marmoratus%C3%A2-%C3%A3-%C3%A2-pseudoplatystoma-reticulatum-exposed-to-roundup-original-%C3%A2
#12
Fernando Rafael de Moura, Kamila Ribeiro Brentegani, Aline Gemelli, Adilson Paulo Sinhorin, Valéria Dornelles Gindri Sinhorin
The aim of this study was to investigate the effects of Roundup Original(®), a glyphosate-based herbicide, against biochemical parameters including thiobarbituric acid-reactive substances (TBARS), protein carbonyl, enzymatic and nonenzymatic antioxidant responses and acetylcholinesterase (AChE) of jundiara fish (Leiarius marmoratus × Pseudoplatystoma reticulatum) at a sublethal concentration of 1.357 mg L(-1). Fish exposed to the herbicide for different periods (6-96 h) showed a significant increase of both hepatic and muscular TBARS and protein carbonyl...
July 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28711406/glycosylation-with-ribitol-phosphate-in-mammals-new-insights-into-the-o-mannosyl-glycan
#13
REVIEW
Hiroshi Manya, Tamao Endo
BACKGROUND: O-mannosyl glycans have been found in a limited number of glycoproteins of the brain, nerves, and skeletal muscles, particularly in α-dystroglycan (α-DG). Defects in O-mannosyl glycan on α-DG are the primary cause of a group of congenital muscular dystrophies, which are collectively termed α-dystroglycanopathy. Recent studies have revealed various O-mannosyl glycan structures, which can be classified as core M1, core M2, and core M3 glycans. Although many dystroglycanopathy genes are involved in core M3 processing, the structure and biosynthesis of core M3 glycan remains only partially understood...
July 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28709849/effects-of-huperzin-a-on-the-beta-amyloid-accumulation-in-the-brain-and-skeletal-muscle-cells-of-a-rat-model-for-alzheimer-s-disease
#14
Cagatay Han Turkseven, Belgin Buyukakilli, Ebru Balli, Derya Yetkin, Mehmet Emin Erdal, Senay Gorucu Yilmaz, Leyla Sahin
AIMS: Alzheimer's Disease (AD) is characterized by a loss of cognitive function and also the accumulation of β-amyloid peptide (βAP) in the brain parenchyma, which plays an important role in this disease. However, it is often also associated with the non-cognitive symptoms such as loss of muscle function (Inclusion-Body Myositis-IBM). MAIN METHODS: Sprague-Dawley rats (13 weeks-n=68) were randomly assigned into five groups: Group C: Control; Group D: d-galactose; Group O+D: Bilateral oophorectomy+d-galactose; Group O: Bilateral oophorectomy; Group O+D+H: Bilateral oophorectomy+d-galactose+Hup-A...
July 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28709149/uptake-of-psma-ligands-in-normal-tissues-is-dependent-on-tumor-load-in-patients-with-prostate-cancer
#15
Florian C Gaertner, Khalil Halabi, Hojjat Ahmadzadehfar, Stefan Kürpig, Elisabeth Eppard, Charalambos Kotsikopoulos, Nikolaos Liakos, Ralph A Bundschuh, Holger Strunk, Markus Essler
Radioligand therapy (RLT) with Lu-177-labeled PSMA-ligands is a new therapy option for prostate cancer. Biodistribution in normal tissues is of interest for therapy planning. We evaluated if the biodistribution of Ga-68-PSMA-11 is influenced by tumor load. RESULTS: In patients with high tumor load, SUVmean was reduced to 61.5% in the lacrimal glands, to 56.6% in the parotid glands, to 63.7% in the submandibular glands, to 61.3% in the sublingual glands and to 55.4% in the kidneys (p < 0...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28708501/bmal1-interference-impairs-hormone-synthesis-and-promotes-apoptosis-in-porcine-granulosa-cells
#16
Wusu Wang, Lin Yin, Long Bai, Guangjun Ma, Cunzhen Zhao, Aoqi Xiang, Weijun Pang, Gongshe Yang, Guiyan Chu
In mammals, granulosa cell proliferation, differentiation, luteinization, apoptosis, and hormone synthesis are tightly related to oocyte maturation, follicular development and ovarian function. In current study, we investigated the role of the key circadian clock gene, brain and muscle arnt-like protein-1 (Bmal1), on porcine granulosa cell hormone secretion and apoptosis. The transcription levels of circadian clock genes, including Bmal1 and period circadian clock 2 (Per2), were detected by RT-qPCR. We found that the circadian clock genes exhibited rhythmic change and were further enhanced by dexamethasone synchronization in granulosa cells...
May 23, 2017: Theriogenology
https://www.readbyqxmd.com/read/28707283/multimodal-physical-activity-increases-brain-derived-neurotrophic-factor-levels-and-improves-cognition-in-institutionalized-older-women
#17
Kelem Vedovelli, Bruno Lima Giacobbo, Márcio Silveira Corrêa, Andréa Wieck, Irani Iracema de Lima Argimon, Elke Bromberg
Physical activity has been proposed as a promising intervention to improve cognition and decrease the risk of dementia in older adults. Brain-derived neurotrophic factor (BDNF) appears to mediate, at least partially, these effects of exercise. However, intervention studies of the effects of multimodal exercises on cognition and BDNF levels are scarce and composed by small samples. Thus, the generalization of the conclusions of these studies depends on the reproducibility of the results. In order to contribute to the knowledge on the field, the present study evaluated the effects of a physical activity intervention composed by muscle strengthening and aerobic conditioning on BDNF levels and cognition in older women...
July 13, 2017: GeroScience
https://www.readbyqxmd.com/read/28706504/hypertrophic-olivary-degeneration-and-palatal-or-oculopalatal-tremor
#18
REVIEW
Caroline Tilikete, Virginie Desestret
Hypertrophic degeneration of the inferior olive is mainly observed in patients developing palatal tremor (PT) or oculopalatal tremor (OPT). This syndrome manifests as a synchronous tremor of the palate (PT) and/or eyes (OPT) that may also involve other muscles from the branchial arches. It is associated with hypertrophic inferior olivary degeneration that is characterized by enlarged and vacuolated neurons, increased number and size of astrocytes, severe fibrillary gliosis, and demyelination. It appears on MRI as an increased T2/FLAIR signal intensity and enlargement of the inferior olive...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28706091/predict-cp-study-protocol-of-implementation-of-comprehensive-surveillance-to-predict-outcomes-for-school-aged-children-with-cerebral-palsy
#19
Roslyn N Boyd, Peter Sw Davies, Jenny Ziviani, Stewart Trost, Lee Barber, Robert Ware, Stephen Rose, Koa Whittingham, Leanne Sakzewski, Kristie Bell, Christopher Carty, Steven Obst, Katherine Benfer, Sarah Reedman, Priya Edwards, Megan Kentish, Lisa Copeland, Kelly Weir, Camilla Davenport, Denise Brooks, Alan Coulthard, Rebecca Pelekanos, Andrea Guzzetta, Simona Fiori, Meredith Wynter, Christine Finn, Andrea Burgess, Kym Morris, John Walsh, Owen Lloyd, Jennifer A Whitty, Paul A Scuffham
OBJECTIVES: Cerebral palsy (CP) remains the world's most common childhood physical disability with total annual costs of care and lost well-being of $A3.87b. The PREDICT-CP (NHMRC 1077257 Partnership Project: Comprehensive surveillance to PREDICT outcomes for school age children with CP) study will investigate the influence of brain structure, body composition, dietary intake, oropharyngeal function, habitual physical activity, musculoskeletal development (hip status, bone health) and muscle performance on motor attainment, cognition, executive function, communication, participation, quality of life and related health resource use costs...
July 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28705994/wearable-brain-imaging-with-multi-modal-physiological-recording
#20
Gary E Strangman, Vladimir Ivkovic, Quan Zhang
The brain is a central component of cognitive and physical human performance. Measures including functional brain activation, cerebral perfusion, cerebral oxygenation, evoked electrical responses, and resting hemodynamic and electrical activity are all related to, or can predict health status or performance decrements. However, measuring brain physiology typically requires large, stationary machines that are not suitable for mobile or self-monitoring. Moreover, when individuals are ambulatory, systemic physiological fluctuations-e...
July 13, 2017: Journal of Applied Physiology
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