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https://www.readbyqxmd.com/read/29154155/the-dynamic-characteristics-of-the-anterior-cingulate-cortex-in-resting-state-fmri-of-patients-with-depression
#1
Hongna Zheng, Feng Li, Qijing Bo, Xianbin Li, Li Yao, Zhijun Yao, Chuanyue Wang, Xia Wu
BACKGROUND: The anterior cingulate cortex (ACC) is part of the limbic system of the brain. It is a bridge between attentional and emotional processing, which is responsible for the integration of visceral, attentional, and affective information. Lesioning of the ACC, which produces striking changes, is used to treat major depression disorder (MDD). Moreover, the brain dynamically integrates and coordinates functions of its different subparts to realize its cognitive capability. Hence, the spatio-temporal community distribution of the ACC is necessary to completely understand MDD...
November 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29150675/mechanisms-by-which-in-vitro-meiotic-arrest-and-sexual-maturity-improve-developmental-potential-of-mouse-oocytes
#2
Fei Chen, Juan Lin, Xue Sun, Bin Xiao, Shu-Fen Ning, Shuai Zhu, Hui-Li Wang, Jing-He Tan
To study the relationship between chromatin condensation, gene transcription and developmental competence during oocyte maturation and to explore the mechanisms by which meiotic arrest maintenance (MAM) and sexual maturity improve oocyte competence, we examined effects of MAM with roscovitine or db-cAMP on chromatin condensation, gene transcription and developmental potential of NSN or SN oocytes from prepubertal or adult mice. MAM with roscovitine improved the developmental competence and global gene transcription of prepubertal NSN (prep-NSN) and adult-SN oocytes while having no effect on those of prep-SN oocytes...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146349/analysis-of-alternariol-and-alternariol-monomethyl-ether-in-foodstuffs-by-molecularly-imprinted-solid-phase-extraction-and-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#3
A Rico-Yuste, J Walravens, J L Urraca, R A G Abou-Hany, A B Descalzo, G Orellana, M Rychlik, S De Saeger, M C Moreno-Bondi
Molecularly imprinted porous polymer microspheres selective to Alternaria mycotoxins, alternariol (AOH) and alternariol monomethyl ether (AME), were synthesized and applied to the extraction of both mycotoxins in food samples. The polymer was prepared using 4-vinylpiridine (VIPY) and methacrylamide (MAM) as functional monomers, ethylene glycol dimethacrylate (EDMA) as cross-linker and 3,8,9-trihydroxy-6H-dibenzo[b,d]pyran-6-one (S2) as AOH surrogate template. A molecularly imprinted solid phase extraction (MISPE) method has been optimized for the selective isolation of the mycotoxins from aqueous samples coupled to HPLC with fluorescence (λex=258nm; λem=440nm) or MS/MS analysis...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29127580/sigma-1-receptor-agonists-induce-oxidative-stress-in-mitochondria-and-enhance-complex-i-activity-in-physiological-condition-but-protect-against-pathological-oxidative-stress
#4
Nino Goguadze, Elene Zhuravliova, Didier Morin, Davit Mikeladze, Tangui Maurice
The sigma1 receptor (σ1R) is a chaperone protein residing at mitochondria-associated endoplasmic reticulum (ER) membranes (MAMs), where it modulates Ca(2+) exchange between the ER and mitochondria by interacting with inositol-1,4,5 trisphosphate receptors (IP3Rs). The σ1R is highly expressed in the central nervous system and its activation stimulates neuromodulation and neuroprotection, for instance in Alzheimer's disease (AD) models in vitro and in vivo. σ1R effects on mitochondria pathophysiology and the downstream signaling are still not fully understood...
November 10, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29121430/the-journey-of-adult-psoriasis-patients-towards-biologics-past-and-present-results-from-the-biocapture-registry
#5
Jmpa van den Reek, Mmb Seyger, Ppm van Lümig, Rjb Driessen, Cjm Schalkwijk, Mam Berends, Pcm van de Kerkhof, Emgj de Jong
BACKGROUND: A considerable disease period often precedes initiation of a biologic in patients with psoriasis. Little is known about this important period in patients' lives. Evaluation of this 'journey' can reveal important insights and opportunities for physicians and health care decision makers. OBJECTIVES: (1) To describe patient and treatment characteristics until the start of biologic treatment in patients with severe psoriasis, (2) to assess shifts in early (2005-2009) versus established (2010-2015) biologics prescription periods, (3) to assess changes in hospital/day care admissions before vs...
November 9, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29113898/finding-order-in-chemical-chaos-continuing-characterization-of-synthetic-cannabinoid-receptor-agonists
#6
REVIEW
Julie A Marusich, Jenny L Wiley, Timothy W Lefever, Purvi R Patel, Brian F Thomas
Diversion of synthetic cannabinoids from the lab to drugs of abuse has become increasingly prevalent in recent years. Moreover, as earlier synthetic cannabinoids were banned, manufacturers introduced a new supply of novel compounds to serve as replacements. Hence, the chemical diversity of synthetic cannabinoid analogs has also rapidly increased. The present study examined 8 new synthetic cannabinoids: AM-1220, AM-2232, AM-2233, AM-679, EAM-2201, JWH-210, JHW-251, and MAM-2201. Each compound was assessed for binding affinity and functional activation of CB1 and CB2 receptors, and pharmacological equivalence with Δ(9)-tetrahydrocannabinol (THC) in THC drug discrimination...
November 4, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29092594/on-the-numerical-investigation-of-sound-transmission-through-double-walled-structures-with-membrane-type-acoustic-metamaterials
#7
Polina Marinova, Stephan Lippert, Otto von Estorff
Acoustic metamaterials appear to be of great help in the design of reliable and effective noise reduction measures in the low frequency range. The current contribution is concerned with the modeling of a low-frequency noise shield, based on a double wall arrangement, which includes membrane-type acoustic metamaterials (MAMs), considered as the most promising approach when it comes especially to the tonal noise at frequencies below 300 Hz. MAMs consist of small-sized membranes loaded with a mass. Due to their robustness and relatively simple production, MAMs have been proven to decrease the sound transmission in frequency ranges, for which poro-elastic materials have a rather negligible effect...
October 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29079227/incorporating-biomarker-stratification-into-stampede-an-adaptive-multi-arm-multi-stage-trial-platform
#8
C Gilson, S Chowdhury, M K B Parmar, M R Sydes
The treatment and outcomes for advanced prostate cancer have experienced significant progress over recent years. Importantly, the additional benefits of 'up front' chemotherapy (docetaxel) and abiraterone, over and above conventional androgen deprivation, have been separately demonstrated in the multi-arm, multi-stage (MAMS) STAMPEDE protocol, which continues recruitment to other questions. Alongside this, insights into the underlying molecular biology and, inevitably, the molecular heterogeneity of prostate cancer are opening the door to new therapeutic approaches...
October 24, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29058809/combining-noninvasive-genetics-and-a-new-mammalian-sex-linked-marker-provides-new-tools-to-investigate-population-size-structure-and-individual-behaviour-an-application-to-bats
#9
D Zarzoso-Lacoste, P-L Jan, L Lehnen, T Girard, A-L Besnard, S J Puechmaille, E J Petit
Monitoring wild populations is crucial for their effective management. Noninvasive genetic methods provide robust data from individual free-ranging animals, which can be used in capture-mark-recapture (CMR) models to estimate demographic parameters without capturing or disturbing them. However, sex- and status-specific behaviour, which may lead to differences in detection probabilities, is rarely considered in monitoring. Here, we investigated population size, sex ratio, sex- and status-related behaviour in 19 Rhinolophus hipposideros maternity colonies (Northern France) with a noninvasive genetic CMR approach (using faeces) combined with parentage assignments...
October 23, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29055103/mitochondrial-ca-2-dynamics-in-cells-and-suspensions
#10
Benjamin Wacquier, Hugo E Romero C, Virginia González-Vélez, Laurent Combettes, Geneviève Dupont
Mitochondria play a significant role in shaping cytosolic Ca(2+) signals. Thus, Ca(2+) transfers across the mitochondrial membrane are much studied, not only in intact cells but also in artificial systems such as mitochondrial suspensions or permeabilised cells. Observed rates of Ca(2+) changes vary by at least one order of magnitude. In this work, we investigate the relationship between the Ca(2+) dynamics observed in various experimental conditions using a computational model calibrated on experimental data...
October 21, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29054537/calcium-signaling-at-the-endoplasmic-reticulum-fine-tuning-stress-responses
#11
REVIEW
Amado Carreras-Sureda, Philippe Pihán, Claudio Hetz
Endoplasmic reticulum (ER) calcium signaling is implicated in a myriad of coordinated cellular processes. The ER calcium content is tightly regulated as it allows a favorable environment for protein folding, in addition to operate as a major reservoir for fast and specific release of calcium. Altered ER homeostasis impacts protein folding, activating the unfolded protein response (UPR) as a rescue mechanism to restore proteostasis. ER calcium release impacts mitochondrial metabolism and also fine-tunes the threshold to undergo apoptosis under chronic stress...
August 20, 2017: Cell Calcium
https://www.readbyqxmd.com/read/29045533/liposuction-augmentation-mammaplasty
#12
Ryan Harris, Peter Raphael, Scott W Harris
Background: The female breast loses superior fullness and becomes more ptotic over time. Women often present to their plastic surgeon requesting reversal of this evolution. While liposuction alone has been proven to lift the breast, no solution combining augmentation and liposuction has been reported. Objectives: Herein, we introduce a technique called liposuction-augmentation mammaplasty (LAM) that can achieve "scarless" lifting or simply volume equalization prior to inserting same-sized implants...
October 16, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29030320/atp-released-from-astrocytes-modulates-action-potential-threshold-and-spontaneous-excitatory-postsynaptic-currents-in-the-neonatal-rat-prefrontal-cortex
#13
Edward Beamer, Gergely Kovács, Beata Sperlágh
Maternal immune activation during pregnancy is a risk factor for neurodevelopmental disorders, such as schizophrenia; however, a full mechanistic understanding has yet to be established. The activity of a transient cell population, the subplate neurons, is critical for the development of cortical inhibition and functional thalamocortical connections. Sensitivity of these cells to factors released during inflammation, therefore, may offer a link between maternal immune activation and the aberrant cortical development underlying some neuropsychiatric disorders...
October 10, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/29028489/assessment-of-types-of-synthetic-cannabinoids-in-narcotic-cases-assessed-by-the-council-of-forensic-medicine-between-2011-2015-ankara-turkey
#14
Ersin Göl, İsmet Çok
Synthetic cannabinoids mimic the effects of cannabis and are the largest and fastest growing class of newly appearing designer drugs. Reports have revealed that various types of synthetic cannabinoids are mixed with herbal substances. The present study investigated the herbal substance cases involving synthetic cannabinoids in Ankara and nearby cities in Turkey. Data were collected from the reports of synthetic cannabinoids that were analyzed between January 01, 2011 and December 31, 2015 in the Ankara Narcotic Department of the Council of Forensic Medicine at the request of the judicial authorities...
October 4, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29018038/increased-localization-of-app-c99-in-mitochondria-associated-er-membranes-causes-mitochondrial-dysfunction-in-alzheimer-disease
#15
Marta Pera, Delfina Larrea, Cristina Guardia-Laguarta, Jorge Montesinos, Kevin R Velasco, Rishi R Agrawal, Yimeng Xu, Robin B Chan, Gilbert Di Paolo, Mark F Mehler, Geoffrey S Perumal, Frank P Macaluso, Zachary Z Freyberg, Rebeca Acin-Perez, Jose Antonio Enriquez, Eric A Schon, Estela Area-Gomez
In the amyloidogenic pathway associated with Alzheimer disease (AD), the amyloid precursor protein (APP) is cleaved by β-secretase to generate a 99-aa C-terminal fragment (C99) that is then cleaved by γ-secretase to generate the β-amyloid (Aβ) found in senile plaques. In previous reports, we and others have shown that γ-secretase activity is enriched in mitochondria-associated endoplasmic reticulum (ER) membranes (MAM) and that ER-mitochondrial connectivity and MAM function are upregulated in AD We now show that C99, in addition to its localization in endosomes, can also be found in MAM, where it is normally processed rapidly by γ-secretase...
October 10, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28982977/3-sulfo-galactosyl-dependent-adhesion-of-escherichia-coli-hs-multivalent-adhesion-molecule-is-attenuated-by-sulfatase-activity
#16
Fitua Al-Saedi, Diana Pereira Vaz, Daniel H Stones, Anne Marie Krachler
Bacterial adhesion to host receptors is an early and essential step in bacterial colonization, and the nature of adhesin-receptor interactions determines bacterial localization and thus the outcome of these interactions. Here, we determined the host receptors for the Multivalent Adhesion Molecule (MAM) from the gut commensal E. coli HS (MAMHS), which contains an array of seven mammalian cell entry (MCE) domains. The MAMHS adhesin interacted with a range of host receptors, through recognition of a shared 3-O-sulfo-galactosyl moiety...
October 5, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28946557/rituximab-effectively-reverses-tyrosine-kinase-inhibitors-tkis-resistance-through-inhibiting-the-accumulation-of-rictor-on-mitochondria-associated-er-membrane-mam
#17
Zhi-Hong Xu, Cai-Hong Liu, Jun-Biao Hang, Bei-Li Gao, Jia-An Hu
Tyrosine kinase inhibitors (TKIs), a novel group of target-specific anti lung cancer drugs, have recently been found to resistant to some NSCLC cells which have the T790M EGFR mutation. However, recent investigations on the therapies of resistance to EGFR-TKIs are very limited. Therefore, it is important to develop more effective therapies to reverse EGFR-TKIs resistance. In our present study, erlotinib was used as the TKIs drug and the effects of the erlotinib on cell growth were evaluated. Cell viability and concentration dependent studies were performed using HCI-H1975 and HCI-H1299 cells alone with erlotinib, respectively...
September 15, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28942427/binding-of-fundc1-with-inositol-1-4-5-trisphosphate-receptor-in-mitochondria-associated-endoplasmic-reticulum-er-membranes-maintains-mitochondrial-dynamics-and-function-in-hearts-in-vivo
#18
Shengnan Wu, Qiulun Lu, Qilong Wang, Ye Ding, Zejun Ma, Xiaoxiang Mao, Kai Huang, Zhonglin Xie, Ming-Hui Zou
Background -FUN14 domain containing 1 (FUNDC1) is a highly conserved outer mitochondrial membrane protein. The aim of this study is to examine if FUNDC1 modulates the mitochondria-associated endoplasmic reticulum (ER) membranes (MAMs), mitochondrial morphology, and function in cardiomyocytes and in intact hearts. Methods -The impacts of FUNDC1 on MAMs formation and cardiac functions were studied in mouse neonatal cardiomyocytes, in mice with cardiomyocyte-specific Fundc1 gene knockout (Fundc1(f/Y)/Cre(αMyHC+/-) ), and in the cardiac tissues of the patients with heart failure...
September 23, 2017: Circulation
https://www.readbyqxmd.com/read/28940366/lon-protease-a-novel-mitochondrial-matrix-protein-in-the-interconnection-between-drug-induced-mitochondrial-dysfunction-and-er-stress
#19
Miriam Polo, Fernando Alegre, Angela B Moragrega, Lara Gibellini, Alberto Marti-Rodrigo, Ana Blas-Garcia, Juan V Esplugues, Nadezda Apostolova
BACKGROUND AND PURPOSE: Mitochondria-associated membranes (MAMs) are specific ER-domains that enable direct interaction with mitochondria and mediate metabolic flow and Ca(2+) transfer. A growing list of proteins have been identified as MAMs components, but how they are recruited and function during complex cell stress situations is still not understood while the participation of mitochondrial matrix proteins is largely undervalued. EXPERIMENTAL APPROACH: This work compares mitochondrial/ER contact during combined ER stress/mitochondrial dysfunction using a model of human hepatoma cells (Hep3B cell line) treated for 24h with classic pharmacological inducers of ER stress (thapsigargin), mitochondrial dysfunction (CCCP or rotenone) or both (the antiretroviral drug Efavirenz used at clinically relevant concentrations)...
September 23, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28934235/lipid-based-nutrient-supplements-lns-for-treatment-of-children-6-months-to-59-months-with-moderate-acute-malnutrition-mam-a-systematic-review
#20
REVIEW
Tarun Gera, Juan Pablo Pena-Rosas, Evelyn Boy-Mena, Harshpal S Sachdev
BACKGROUND: Moderate acute malnutrition is a major public health problem affecting children from low- and middle-income countries. Lipid nutrient supplements have been proposed as a nutritional intervention for its treatment. OBJECTIVES: To evaluate the effectiveness and safety of LNS for the treatment of MAM in infants and children 6 to 59 months of age. STUDY DESIGN: Systematic review of randomized-controlled trials and controlled before-after studies...
2017: PloS One
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