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https://www.readbyqxmd.com/read/29051571/a-new-cellular-type-in-invertebrates-first-evidence-of-telocytes-in-leech-hirudo-medicinalis
#1
Laura Pulze, Nicolò Baranzini, Rossana Girardello, Annalisa Grimaldi, Lidia Ibba-Manneschi, Enzo Ottaviani, Marcella Reguzzoni, Gianluca Tettamanti, Magda de Eguileor
Telocytes, a peculiar cell type, were recently found in vertebrates. Hence this cell system has been reported as ubiquitous in the bodies of mammals and interpreted as an important player in innate immunity and tissue regeneration, it is reasonable to look for it also in invertebrates, that rely their integrity solely by innate immunity. Here we describe, at morphological and functional level, invertebrate telocytes from the body of leech Hirudo medicinalis (Annelida), suggesting how these cells, forming a resident stromal 3D network, can influence or participate in different events...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29044796/social-traits-social-networks-and-evolutionary-biology
#2
David N Fisher, Andrew G McAdam
The social environment is both an important agent of selection for most organisms, and an emergent property of their interactions. As an aggregation of interactions among members of a population, the social environment is a product of many sets of relationships, and so can be represented as a network or matrix. Social network analysis in animals has focused on why these networks possess the structure they do, and whether individuals' network traits, representing some aspect of their social phenotype, relate to their fitness...
October 17, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/29038558/prokineticin-receptor-1-dependent-paracrine-and-autocrine-pathways-control-cardiac-tcf21-fibroblast-progenitor-cell-transformation-into-adipocytes-and-vascular-cells
#3
Rehana Qureshi, Michel Kindo, Himanshu Arora, Mounia Boulberdaa, Marja Steenman, Canan G Nebigil
Cardiac fat tissue volume and vascular dysfunction are strongly associated, accounting for overall body mass. Despite its pathophysiological significance, the origin and autocrine/paracrine pathways that regulate cardiac fat tissue and vascular network formation are unclear. We hypothesize that adipocytes and vasculogenic cells in adult mice hearts may share a common cardiac cells that could transform into adipocytes or vascular lineages, depending on the paracrine and autocrine stimuli. In this study utilizing transgenic mice overexpressing prokineticin receptor (PKR1) in cardiomyocytes, and tcf21ERT-cre(TM)-derived cardiac fibroblast progenitor (CFP)-specific PKR1 knockout mice (PKR1 (tcf-/-)), as well as FACS-isolated CFPs, we showed that adipogenesis and vasculogenesis share a common CFPs originating from the tcf21(+) epithelial lineage...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036924/bio-inspired-distributed-transmission-power-control-considering-qos-fairness-in-wireless-body-area-sensor-networks
#4
Chan-Jae Lee, Ji-Young Jung, Jung-Ryun Lee
Recently, the development of wireless body area sensor network (WBASN) has accelerated due to the rapid development of wireless technology. In the WBASN environment, many WBASNs coexist where communication ranges overlap with each other, resulting in the possibility of interference. Although nodes in a WBASN typically operate at a low power level, to avoid adversely affecting the human body, high transmission rates may be required to support some applications. In addition to this, since many varieties of applications exist in the WBASN environment, each prospective user may have different quality of service (QoS) requirements...
October 14, 2017: Sensors
https://www.readbyqxmd.com/read/29023448/structural-host-microbiota-interaction-networks
#5
REVIEW
Emine Guven-Maiorov, Chung-Jung Tsai, Ruth Nussinov
Hundreds of different species colonize multicellular organisms making them "metaorganisms". A growing body of data supports the role of microbiota in health and in disease. Grasping the principles of host-microbiota interactions (HMIs) at the molecular level is important since it may provide insights into the mechanisms of infections. The crosstalk between the host and the microbiota may help resolve puzzling questions such as how a microorganism can contribute to both health and disease. Integrated superorganism networks that consider host and microbiota as a whole-may uncover their code, clarifying perhaps the most fundamental question: how they modulate immune surveillance...
October 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29016439/examining-the-ability-of-artificial-neural-networks-machine-learning-models-to-accurately-predict-complications-following-posterior-lumbar-spine-fusion
#6
Jun S Kim, Robert K Merrill, Varun Arvind, Deepak Kaji, Sara D Pasik, Chuma C Nwachukwu, Luilly Vargas, Nebiyu S Osman, Eric K Oermann, John M Caridi, Samuel K Cho
STUDY DESIGN: Cross-sectional database study. OBJECTIVE: To train and validate machine learning models to identify risk factors for complications following posterior lumbar spine fusion. SUMMARY OF BACKGROUND DATA: Machine learning models such as artificial neural networks (ANNs) are valuable tools for analyzing and interpreting large and complex datasets. ANNs have yet to be used for risk factor analysis in orthopedic surgery. METHODS: The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was queried for patients who underwent posterior lumbar spine fusion...
October 9, 2017: Spine
https://www.readbyqxmd.com/read/28994743/an-iot-based-computational-framework-for-healthcare-monitoring-in-mobile-environments
#7
Higinio Mora, David Gil, Rafael Muñoz Terol, Jorge Azorín, Julian Szymanski
The new Internet of Things paradigm allows for small devices with sensing, processing and communication capabilities to be designed, which enable the development of sensors, embedded devices and other 'things' ready to understand the environment. In this paper, a distributed framework based on the internet of things paradigm is proposed for monitoring human biomedical signals in activities involving physical exertion. The main advantages and novelties of the proposed system is the flexibility in computing the health application by using resources from available devices inside the body area network of the user...
October 10, 2017: Sensors
https://www.readbyqxmd.com/read/28993482/the-prediction-of-impact-of-a-looming-stimulus-onto-the-body-is-subserved-by-multisensory-integration-mechanisms
#8
Justine Cléry, Olivier Guipponi, Soline Odouard, Serge Pinède, Claire Wardak, Suliann Ben Hamed
In the jungle, survival is highly correlated with the ability to detect and distinguish between an approaching predator and a putative prey. From an ecological perspective, a predator rapidly approaching its prey is a stronger cue for flight than a slowly moving predator. In the present study, we use functional magnetic resonance imaging (fMRI) in the non-human primate, to investigate the neural bases of the prediction of an impact to the body by a looming stimulus, i.e. the neural bases of the interaction between a dynamic visual stimulus approaching the body and its expected consequences onto an independent sensory modality, namely, touch...
October 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28983275/cortical-substrate-of-supraspinal-fatigue-following-exhaustive-aerobic-exercise-localizes-to-a-large-cluster-in-the-anterior-premotor-cortex
#9
Priyantha Herath, Martin Carmichael, Angela Murphy, Leonardo Bonilha, Roger Newman-Norlund, Chris Rorden, Mark Davis
Strenuous exercise leads to a progressive reduction in the performance of voluntary physical exercise. This is due to a process described as fatigue and is defined as the failure to maintain the required or expected power output. While some of this is muscular in origin, there are data suggestive of how fatigue is modulated by cortical signals, leading to a concept of central fatigue. The previously reported fatigue-induced changes in cortical activity may have been due to blood oxygen-dependent (BOLD) signal drift and/or neural habituation alone...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28981613/-wrong-way-up-temporal-and-spatial-dynamics-of-the-networks-for-body-motion-processing-at-9-4-t
#10
Marina A Pavlova, Michael Erb, Gisela E Hagberg, Joana Loureiro, Alexander N Sokolov, Klaus Scheffler
Body motion delivers a wealth of socially relevant information. Yet display inversion severely impedes biological motion (BM) processing. It is largely unknown how the brain circuits for BM are affected by display inversion. As upright and upside-down point-light BM displays are similar, we addressed this issue by using ultrahigh field functional MRI at 9.4 T providing for high sensitivity and spatial resolution. Whole-brain analysis along with exploration of the temporal dynamics of the blood-oxygen-level-dependent response reveals that in the left hemisphere, inverted BM activates anterior networks likely engaged in decision making and cognitive control, whereas readily recognizable upright BM activates posterior areas solely...
July 10, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28976046/positive-effects-of-refugee-presence-on-host-community-nutritional-status-in-turkana-county-kenya
#11
Rieti G Gengo, Rahul C Oka, Varalakshmi Vemuru, Mark Golitko, Lee T Gettler
OBJECTIVES: Refugee camps are often assumed to negatively impact local host communities through resource competition and conflict. We ask instead whether economic resources and trade networks associated with refugees have benefits for host community health and nutrition. To address this question we assess the impacts of Kakuma Refugee Camp in northwest Kenya, comparing anthropometric indicators of nutritional status between Turkana communities in the region. METHODS: Participants were recruited at four sites in Turkana County (N = 586): Kakuma Town, adjacent to Kakuma Refugee Camp; Lorugum, an area with sustained economic development; Lokichoggio, formerly host to international NGOs, and now underdeveloped; and Lorengo, an undeveloped, rural community...
October 4, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28966692/wearable-technology-role-in-respiratory-health-and-disease
#12
REVIEW
Andrea Aliverti
In the future, diagnostic devices will be able to monitor a patient's physiological or biochemical parameters continuously, under natural physiological conditions and in any environment through wearable biomedical sensors. Together with apps that capture and interpret data, and integrated enterprise and cloud data repositories, the networks of wearable devices and body area networks will constitute the healthcare's Internet of Things. In this review, four main areas of interest for respiratory healthcare are described: pulse oximetry, pulmonary ventilation, activity tracking and air quality assessment...
June 2017: Breathe
https://www.readbyqxmd.com/read/28965182/a-green-media-access-method-for-ieee-802-15-6-wireless-body-area-network
#13
Anil K Jacob, Lillykutty Jacob
It is of utmost importance to conserve battery energy to the maximum possible extent in WBAN nodes while collecting and transferring medical data. The IEEE 802.15.6 WBAN standard does not specify any method to conserve energy. This paper focuses on a method to conserve energy in IEEE 802.15.6 WBAN nodes when using CSMA/CA, while simultaneously restricting data delivery delay to the required value as specified in medical applications. The technique is to allow the nodes to sleep all the times except for receiving beacons and for transmitting data frames whenever a data frame enters an empty buffer...
September 30, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28956827/link-scheduling-algorithm-with-interference-prediction-for-multiple-mobile-wbans
#14
Thien T T Le, Sangman Moh
As wireless body area networks (WBANs) become a key element in electronic healthcare (e-healthcare) systems, the coexistence of multiple mobile WBANs is becoming an issue. The network performance is negatively affected by the unpredictable movement of the human body. In such an environment, inter-WBAN interference can be caused by the overlapping transmission range of nearby WBANs. We propose a link scheduling algorithm with interference prediction (LSIP) for multiple mobile WBANs, which allows multiple mobile WBANs to transmit at the same time without causing inter-WBAN interference...
September 28, 2017: Sensors
https://www.readbyqxmd.com/read/28946601/efficacy-analysis-of-ldpc-coded-apsk-modulated-differential-space-time-frequency-coded-for-wireless-body-area-network-using-mb-pulsed-ofdm-uwb-technology
#15
C T Manimegalai, Sabitha Gauni, K Kalimuthu
Wireless body area network (WBAN) is a breakthrough technology in healthcare areas such as hospital and telemedicine. The human body has a complex mixture of different tissues. It is expected that the nature of propagation of electromagnetic signals is distinct in each of these tissues. This forms the base for the WBAN, which is different from other environments. In this paper, the knowledge of Ultra Wide Band (UWB) channel is explored in the WBAN (IEEE 802.15.6) system. The measurements of parameters in frequency range from 3...
September 8, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28943999/measuring-site-fidelity-and-spatial-segregation-within-animal-societies
#16
Thomas O Richardson, Luca Giuggioli, Nigel R Franks, Ana B Sendova-Franks
Animals often display a marked tendency to return to previously visited locations that contain important resources, such as water, food, or developing brood that must be provisioned. A considerable body of work has demonstrated that this tendency is strongly expressed in ants, which exhibit fidelity to particular sites both inside and outside the nest. However, thus far many studies of this phenomena have taken the approach of reducing an animal's trajectory to a summary statistic, such as the area it covers...
August 2017: Methods in Ecology and Evolution
https://www.readbyqxmd.com/read/28935759/lymphangiogenesis-facilitates-initial-lymph-formation-and-enhances-the-dendritic-cell-mobilizing-chemokine-ccl21-without-affecting-migration
#17
Tine V Karlsen, Tore Reikvam, Anne Tofteberg, Elham Nikpey, Trude Skogstrand, Marek Wagner, Olav Tenstad, Helge Wiig
OBJECTIVE: Lymphatic vessels play an important role in body fluid, as well as immune system homeostasis. Although the role of malfunctioning or missing lymphatics has been studied extensively, less is known on the functional consequences of a chronically expanded lymphatic network or lymphangiogenesis. APPROACH AND RESULTS: To this end, we used K14-VEGF-C (keratin-14 vascular endothelial growth factor-C) transgenic mice overexpressing the vascular endothelial growth factor C in skin and investigated the responses to inflammatory and fluid volume challenges...
September 21, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28920907/energy-analysis-of-decoders-for-rakeness-based-compressed-sensing-of-ecg-signals
#18
Fabio Pareschi, Mauro Mangia, Daniele Bortolotti, Andrea Bartolini, Luca Benini, Riccardo Rovatti, Gianluca Setti
In recent years, compressed sensing (CS) has proved to be effective in lowering the power consumption of sensing nodes in biomedical signal processing devices. This is due to the fact the CS is capable of reducing the amount of data to be transmitted to ensure correct reconstruction of the acquired waveforms. Rakeness-based CS has been introduced to further reduce the amount of transmitted data by exploiting the uneven distribution to the sensed signal energy. Yet, so far no thorough analysis exists on the impact of its adoption on CS decoder performance...
September 13, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28901713/neural-correlates-of-interoception-effects-of-interoceptive-focus-and-relationship-to-dimensional-measures-of-body-awareness
#19
Emily R Stern, Stephanie J Grimaldi, Alexandra Muratore, James Murrough, Evan Leibu, Lazar Fleysher, Wayne K Goodman, Katherine E Burdick
Interoception has been defined as the sensing of the physiological condition of the body, with interoceptive sensibility (IS) characterizing an individual's self-reported awareness of internal sensation. IS is a multidimensional construct including not only the tendency to be aware of sensation but also how sensations are interpreted, regulated, and used to inform behavior, with different dimensions relating to different aspects of health and disease. Here we investigated neural mechanisms of interoception when healthy individuals attended to their heartbeat and skin temperature, and examined the relationship between neural activity during interoception and individual differences in self-reported IS using the Multidimensional Scale of Interoceptive Awareness (MAIA)...
September 12, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28895272/stretchable-electronic-sensors-of-nanocomposite-network-films-for-ultrasensitive-chemical-vapor-sensing
#20
Hong Yan, Mengjuan Zhong, Ze Lv, Pengbo Wan
A stretchable, transparent, and body-attachable chemical sensor is assembled from the stretchable nanocomposite network film for ultrasensitive chemical vapor sensing. The stretchable nanocomposite network film is fabricated by in situ preparation of polyaniline/MoS2 (PANI/MoS2 ) nanocomposite in MoS2 suspension and simultaneously nanocomposite deposition onto prestrain elastomeric polydimethylsiloxane substrate. The assembled stretchable electronic sensor demonstrates ultrasensitive sensing performance as low as 50 ppb, robust sensing stability, and reliable stretchability for high-performance chemical vapor sensing...
September 12, 2017: Small
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