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https://www.readbyqxmd.com/read/29679838/medico-legal-investigation-in-an-explicable-case-of-congenital-central-hypoventilation-syndrome-due-to-a-rare-variant-of-the-phox2b-gene
#1
Francesco Ventura, Rosario Barranco, Tiziana Bachetti, Paolo Nozza, Ezio Fulcheri, Antonella Palmieri, Isabella Ceccherini
The heterozygous PHOX2B gene mutation is related to congenital central hypoventilation syndrome (CCHS). It is characterized by defective autonomous nervous system development leading to inadequate breathing response to hypoxia and hypercapnia, leading to hypoventilation especially during non-REM sleep, but also during waking in the more severe cases. Herein we report a case of sudden death in a 28-day-old child. The mother reported the infant was found lying on her own bed in the prone position. The infant was wearing a romper and lying in her crib without any blanket or other objects...
April 17, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29679724/harvest-and-trade-of-caterpillar-mushroom-ophiocordyceps-sinensis-and-the-implications-for-sustainable-use-in-the-tibet-region-of-southwest-china
#2
Jun He
ETHNOPHARMACOLOGICAL RELEVANCE: caterpillar mushroom (Ophiocordyceps sinensis) is a unique medicinal fungi which is only found in alpine grasslands in Himalayan mountain regions and the Tibetan Plateau. Known locally as Yartsa Gunbu, it has been widely used in Tibetan and Chinese Medicine for centuries. It is crucial to understand local commercial harvest and trade practices of caterpillar mushroom to support the sustainable management of this valuable resource. However, data derived from empirically grounded research is currently limited, particularly in China...
April 18, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29679673/glycogen-based-self-healing-hydrogels-with-ultra-stretchable-flexible-and-enhanced-mechanical-properties-via-sacrificial-bond-interactions
#3
Imtiaz Hussain, Sayed Mir Sayed, Shunli Liu, Olayinka Oderinde, Fang Yao, Guodong Fu
The development of hydrogel materials with enhanced mechanical properties is the primary focus in designing autonomous self-healable hydrogel materials. Here, we present a facile and cost-effective method for the autonomous self-healing hydrogel based on Glycogen (Gly/PAA-Fe3+ ) with enhanced mechanical properties by simple insertion of ferric ions in the physically cross-linked network via metal-ligand interactions. This dual physically cross-linked hydrogel has an excellent elongation at break and self-healing properties due to the dynamic ionic cross-linking point...
April 18, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29679631/possible-early-detection-of-coronary-artery-calcium-progression-in-type-1-diabetes-a-case-control-study-of-normoalbuminuric-type-1-diabetes-patients-and-matched-controls
#4
Henrik Ø Hjortkjær, Tonny Jensen, Jannik Hilsted, Helle Corinth, Ulrik M Mogensen, Lars Køber, Andreas Fuchs, Børge G Nordestgaard, Klaus F Kofoed
AIMS: Coronary artery calcium (CAC) is associated with cardiovascular (CV) disease and progression of CAC is an independent predictor of mortality. Type 1 diabetes is associated with increased CV risk, especially in persons with cardiovascular autonomic neuropathy (CAN). This study aimed to examine whether short-term progression of CAC is increased in persons with type 1 diabetes compared to matched controls and if CAN increases risk of CAC progression. METHODS: Fifty-three normoalbuminuric persons with long-term type 1 diabetes (20 with CAN) were matched in a 1:2 ratio with 106 controls without diabetes according to age, sex and baseline CAC...
April 18, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29678921/a-repeating-sulfated-galactan-motif-resuscitates-dormant-micrococcus-luteus
#5
Thomas Böttcher, Dávid Szamosvári, Jon Clardy
Only a small fraction of bacteria can autonomously initiate growth on agar plates. Non-growing bacteria typically enter a metabolically inactive dormant state and require specific chemical trigger factors or signals to exit this state and resume growth. Micrococcus luteus has become a model organism for this important yet poorly understood phenomenon. So far, only few resuscitation signals have been described and all of them are produced endogenously by bacterial species. We report the discovery of a novel type of resuscitation signal that allows M...
April 20, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29678624/autonomic-cardiovascular-control-and-cardiac-arrhythmia-in-two-pregnant-women-with-hypertrophic-cardiomyopathy-insights-from-icd-monitoring
#6
Pietro Francia, Carmen Adduci, Beatrice Musumeci, Lorenzo Semprini, Francesca Palano, Luigi Zezza, Massimo Volpe, Camillo Autore
In women with hypertrophic cardiomyopathy (HCM), pregnancy prompts major changes in hemodynamic and cardiac autonomic function that may precipitate heart failure (HF) or increase the risk of cardiac arrhythmia. We report the clinical follow-up of two patients with non-obstructive HCM implanted with a cardioverter defibrillator (ICD) allowing for continuous analysis of heart rate (HR), heart rate variability (HRV) and cardiac arrhythmia throughout the entire course of pregnancy. Both patients experienced increased HR and decreased HRV from the early stages of pregnancy, which persisted until delivery...
April 17, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29678444/biliary-epithelium-a-neuroendocrine-compartment-in-cholestatic-liver-disease
#7
REVIEW
Laurent Ehrlich, Marinda Scrushy, Fanyin Meng, Terry C Lairmore, Gianfranco Alpini, Shannon Glaser
Hepatic fibrosis is characterized by abnormal accumulation of extracellular matrix (ECM) that can lead to ductopenia, cirrhosis, and even malignant transformation. In this review, we examine cholestatic liver diseases characterized by extensive biliary fibrosis such as primary sclerosing cholangitis (PSC), primary biliary cholangitis (PBC), polycystic liver disease (PLD), and MDR2-/- and BDL mouse models. Following biliary injury, cholangiocytes, the epithelial cells that line the bile ducts, become reactive and adopt a neuroendocrine phenotype in which they secrete and respond to neurohormones and neuropeptides in an autocrine and paracrine fashion...
April 17, 2018: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/29678284/aberrant-g-protein-coupled-hormone-receptor-in-adrenal-diseases
#8
REVIEW
Matthieu St-Jean, Nada El Ghorayeb, Isabelle Bourdeau, André Lacroix
The regulation of cortisol or aldosterone production when ACTH of pituitary origin or the renin-angiotensin systems are suppressed in primary adrenal Cushing's syndrome or in primary aldosteronism is exerted by diverse genetic and molecular mechanisms. In addition to recently identified mutations in various genes implicated in the cyclic AMP or ion channel pathways, steroidogenesis is not really autonomous as it is frequently regulated by the aberrant adrenocortical expression of diverse hormone receptors, particularly G-protein coupled hormone receptors (GPCR) which can substitute for the normal function of ACTH or angiotensin-II...
April 2018: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29677839/spiking-neural-networks-with-unsupervised-learning-based-on-stdp-using-resistive-synaptic-devices-and-analog-cmos-neuron-circuit
#9
Min-Woo Kwon, Myung-Hyun Baek, Sungmin Hwang, Sungjun Kim, Byung-Gook Park
We designed the CMOS analog integrate and fire (I&F) neuron circuit can drive resistive synaptic device. The neuron circuit consists of a current mirror for spatial integration, a capacitor for temporal integration, asymmetric negative and positive pulse generation part, a refractory part, and finally a back-propagation pulse generation part for learning of the synaptic devices. The resistive synaptic devices were fabricated using HfOx switching layer by atomic layer deposition (ALD). The resistive synaptic device had gradual set and reset characteristics and the conductance was adjusted by spike-timing-dependent-plasticity (STDP) learning rule...
September 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29677475/molecular-and-functional-neuroscience-in-immunity
#10
Valentin A Pavlov, Sangeeta S Chavan, Kevin J Tracey
The nervous system regulates immunity and inflammation. The molecular detection of pathogen fragments, cytokines, and other immune molecules by sensory neurons generates immunoregulatory responses through efferent autonomic neuron signaling. The functional organization of this neural control is based on principles of reflex regulation. Reflexes involving the vagus nerve and other nerves have been therapeutically explored in models of inflammatory and autoimmune conditions, and recently in clinical settings...
April 26, 2018: Annual Review of Immunology
https://www.readbyqxmd.com/read/29676835/heart-rate-variability-parameters-in-children-with-ventricular-preexcitation
#11
Serhat Koca, Feyza Aysenur Pac, Ajda Mihcioglu, Deniz Eris, Serkan Cay, Ozcan Ozeke
INTRODUCTION: The autonomic nervous system has a regulatory effect on cardiac electrophysiology and arrhythmogenesis. We aimed to assess cardiac autonomic status using heart rate variability (HRV) parameters in children with ventricular preexcitation. METHODS: The electrocardiography, Holter monitoring, transesophageal electrophysiological study (TEEPS) and invasive electrophysiological study (EPS) results of ventricular preexcitation patients obtained over a 7-year period in our clinic were evaluated...
April 20, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29676614/sourcebook-update-intestinal-smooth-muscle-contractility-and-autonomic-control
#12
Philip D Langton
This laboratory practical requires first-year students to anticipate the effects of drugs active at cholinergic and adrenergic receptors on gut motility in order to design experiments during an authentic inquiry exercise. Rather than specifying a strict sequence of drug additions that aim to provide ideal demonstrations of pharmacological and physiological antagonism, I have instead designed switches into the drugs provided and set students, working in small teams, the task of identifying the switched drugs, an inquiry activity...
June 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29676547/morphologic-comparison-of-peripheral-nerves-in-adipocyte-tissue-from-db-db-diabetic-versus-normal-mice
#13
Kyung Ae Lee, Na Young Lee, Tae Sun Park, Heung Yong Jin
Present study investigated the morphologic changes of autonomic nerves in the adipose tissue in diabetic animal model. Male obese type 2 diabetic db/db mice and age matched non-diabetic db/m control mice were used. Epididymal adipose tissue from diabetic db/db mice with that from control heterozygous db/m mice was compared using confocal microscopy-based method to visualize intact whole adipose tissue. Immunohistochemistry with tyrosine hydroxylase for sympathetic (SP), choline acetyltransferase for parasympathetic (PSP), and protein gene product 9...
April 2018: Diabetes & Metabolism Journal
https://www.readbyqxmd.com/read/29676218/vaunting-the-independent-amateur-scientific-american-and-the-representation-of-lay-scientists
#14
Sean F Johnston
This paper traces how media representations encouraged enthusiasts, youth and skilled volunteers to participate actively in science and technology during the twentieth century. It assesses how distinctive discourses about scientific amateurs positioned them with respect to professionals in shifting political and cultural environments. In particular, the account assesses the seminal role of a periodical, Scientific American magazine, in shaping and championing an enduring vision of autonomous scientific enthusiasms...
April 20, 2018: Annals of Science
https://www.readbyqxmd.com/read/29675928/differential-cardiac-sympatho-inhibitory-responses-produced-by-the-agonists-b-ht-933-quinpirole-and-immepip-in-normoglycemic-and-diabetic-pithed-rats
#15
Eduardo Rivera-Mancilla, Alain H Altamirano-Espinoza, Guadalupe Manrique-Maldonado, Belinda Villanueva-Castillo, Carlos M Villalón
This study compared the cardiac sympatho-inhibitory responses produced by agonists at α2 -adrenergic (B-HT 933), dopamine D2 -like (quinpirole) and histamine H3 /H4 (immepip) receptors between normoglycemic and streptozotocin-pretreated (diabetic) pithed rats. Intravenous (i.v.) continuous infusions of B-HT 933, quinpirole or immepip were used in normoglycemic and diabetic pithed rats to analyse their sympatho-inhibitory effects on the electrically-stimulated cardioaccelerator sympathetic outflow. Both in normoglycemic and diabetic animals, B-HT 933 (until 100 μg/kg...
April 19, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29675265/tissue-specific-transcriptome-profiling-of-drosophila-reveals-roles-for-gata-transcription-factors-in-longevity-by-dietary-restriction
#16
Adam J Dobson, Xiaoli He, Eric Blanc, Ekin Bolukbasi, Yodit Feseha, Mingyao Yang, Matthew D W Piper
Dietary restriction (DR) extends animal lifespan, but imposes fitness costs. This phenomenon depends on dietary essential amino acids (EAAs) and TOR signalling, which exert systemic effects. However, the roles of specific tissues and cell-autonomous transcriptional regulators in diverse aspects of the DR phenotype are unknown. Manipulating relevant transcription factors (TFs) specifically in lifespan-limiting tissues may separate the lifespan benefits of DR from the early-life fitness costs. Here, we systematically analyse transcription across organs of Drosophila subjected to DR or low TOR and predict regulatory TFs...
2018: NPJ Aging and Mechanisms of Disease
https://www.readbyqxmd.com/read/29675210/dynamical-inversion-of-the-energy-landscape-promotes-non-equilibrium-self-assembly-of-binary-mixtures
#17
Luis Ruiz Pestana, Natalie Minnetian, Laura Nielsen Lammers, Teresa Head-Gordon
When driven out of equilibrium, many diverse systems can form complex spatial and dynamical patterns, even in the absence of attractive interactions. Using kinetic Monte Carlo simulations, we investigate the phase behavior of a binary system of particles of dissimilar size confined between semiflexible planar surfaces, in which the nanoconfinement introduces a non-local coupling between particles, which we model as an activation energy barrier to diffusion that decreases with the local fraction of the larger particle...
February 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29675163/imaging-multiple-micrornas-in-living-cells-using-atp-self-powered-strand-displacement-cascade-amplification
#18
Xiangdan Meng, Wenhao Dai, Kai Zhang, Haifeng Dong, Xueji Zhang
Herein, we design a smart autonomous ATP self-powered strand-displacement cascade amplification (SDCA) system for highly sensitive multiple intracellular miRNA detection. Rationally engineered Y-motif DNA structures are functionalized on mesoporous silica-coated copper sulfide nanoparticles loaded with numerous ATPs (CuS@mSiO2 -Y/ATP) through pH stimulus-responsive disulfide bonds. The SDCA system is implemented by endogenous specific miRNA as a trigger and ATP as fuel released from the nanocarrier at acidic pH and photothermal stimuli-responsive CuS...
February 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29674867/-anagrus-dmitrievi-sp-n-hymenoptera-mymaridae-an-egg-parasitoid-of-zyginidia-eremita-hemiptera-cicadellidae-a-pest-of-maize-in-xinjiang-china
#19
Qin Li, Hongying Hu, Serguei V Triapitsyn, Long Yi, Jiaxiong Lu
A new Palaearctic species of Anagrus Haliday (Hymenoptera, Mymaridae), A. (Anagrus) dmitrievi Triapitsyn & Hu, sp. n. , is described, diagnosed, and illustrated from Xinjiang Uyghur Autonomous Region of China. It was reared from parasitized eggs of the leafhopper Zyginidia (Zyginidia) eremita Zachvatkin (Hemiptera, Cicadellidae) on leaves of maize. A key to the 21 named species of Anagrus known from China is provided. Zyginidia eremita is an important economic pest in Xinjiang, occurring in approximately 90% of maize fields...
2018: ZooKeys
https://www.readbyqxmd.com/read/29674485/management-of-endocrine-disease-diagnosis-and-management-of-primary-aldosteronism-the-endocrine-society-guideline-2016-revisited
#20
Tracy Ann Williams, Martin Reincke
The syndrome of primary aldosteronism (PA) is characterized by hypertension with excessive, autonomous aldosterone production and is usually caused by either a unilateral aldosterone-producing adenoma (APA) or bilateral adrenal hyperplasia (BAH). The diagnostic workup of PA is a sequence of three phases comprising screening tests, confirmatory tests and the differentiation of unilateral from bilateral forms. The latter step is necessary to determine the optimal treatment approach of unilateral laparoscopic adrenalectomy (for patients with unilateral PA) or medical treatment with a mineralocorticoid receptor antagonist (for patients with bilateral PA)...
April 19, 2018: European Journal of Endocrinology
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