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https://www.readbyqxmd.com/read/29124627/laboring-until-labor-the-prevalence-and-correlates-of-antenatal-maternity-leave-in-the-united-states
#1
Julia M Goodman
Introduction Most women in the U.S. are employed during pregnancy and work until the month of childbirth. For many, working throughout pregnancy poses little threat to their health; however, women experiencing difficult pregnancies and/or working in strenuous or inflexible jobs may benefit from taking time from work as they approach childbirth, but almost no empirical evidence examines antenatal leave (ANL). Methods Using a national survey of English-speaking women, this paper offers the first national description of ANL and examines state policy predictors of uptake...
November 9, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/29065731/optimising-the-effect-of-noise-reduction-algorithm-clearvoice-in-cochlear-implant-users-by-increasing-the-maximum-comfort-levels
#2
J Gertjan Dingemanse, André Goedegebure
OBJECTIVE: ClearVoice is a single-microphone noise reduction algorithm in Advanced Bionics cochlear implant(CI) systems with the aim to improve performance in background noise. The present study investigated a hypothesised increased effect of ClearVoice if combined with a structural increase of maximum comfort stimulation levels (M-levels) in the CI fitting. DESIGN: We tested performance with ClearVoice (Medium) in four conditions, defined by combined settings of ClearVoice off/on and with/without 5% increase of M-levels...
October 24, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/29050301/mir-377-promotes-white-adipose-tissue-inflammation-and-decreases-insulin-sensitivity-in-obesity-via-suppression-of-sirtuin-1-sirt1
#3
Jie Peng, Yinghui Wu, Zhao Deng, Yuanfei Zhou, Tongxing Song, Yang Yang, Xiaming Zhang, Tao Xu, Mao Xia, Anle Cai, Zuhong Liu, Jian Peng
Obesity is associated with a wide range of metabolic disorders including inflammation and insulin-resistance. Sirtuin-1 (SIRT1) is an important regulator of metabolic homeostasis and stress response pathways in white adipose tissue. However, involvement of microRNAs (miRNAs) in regulating SIRT1 during obesity-induced inflammation and insulin-resistance remains unclear. Here, we found that miR-377 was upregulated in adipose tissue and showed a negative correlation with SIRT1 in chronic high fat diet (HFD)-fed mice...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28993860/lanthanum-damages-learning-and-memory-and-suppresses-astrocyte-neuron-lactate-shuttle-in-rat-hippocampus
#4
Cuihong Jin, Liang Gao, Yingqi Li, Shengwen Wu, Xiaobo Lu, Jinghua Yang, Yuan Cai
Rare-earth elements (REEs) are applied in various fields by virtue of their superior physical and chemical properties. Surveys have reported that REEs can impair learning and memory in children and induce neurobehavioral abnormalities in animals. However, the mechanism underlying this neurotoxicity is still unclear. Lanthanum (La) is often chosen to study the effects of REEs. Here, we investigated the role of astrocyte-neuron lactate shuttle (ANLS) in spatial learning and memory impairment induced by LaCl3 in hippocampus, an important spatial memory-related brain region...
December 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28988222/an-isobolographic-analysis-of-the-anti-nociceptive-effect-of-geraniin-in-combination-with-morphine-or-diclofenac
#5
Eric Boakye-Gyasi, Ella Anle Kasanga, Elvis Ofori Ameyaw, Wonder Kofi Mensah Abotsi, Robert Peter Biney, Christian Agyare, Eric Woode
BACKGROUND: Geraniin, a dehydroellagitannin, is a major component of the aqueous extract of the aerial parts of Phyllanthus muellerianus (Kuntze) Exell. (Euphorbiaceae). Several Phyllanthus species are traditionally used for painful disorders. The anti-nociceptive effects of the aqueous extract of the aerial parts of P. muellerianus and of geraniin have been scientifically established. The aim of the paper is to determine whether a combination of geraniin and diclofenac or geraniin and morphine leads to better anti-nociceptive effects...
October 9, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28960551/insect-models-of-central-nervous-system-energy-metabolism-and-its-links-to-behavior
#6
REVIEW
Clare C Rittschof, Stefanie Schirmeier
Neuronal activity requires a vast amount of energy. Energy use in the brain is spatially and temporally dynamic, which reflects the changing activity of the neuronal circuits and might be important for modulating neuronal output. Much recent work has focused on understanding how brain glial cells take up nutrients from circulation and subsequently provide metabolic precursors to neurons. However, within the neurons, modulation of cellular metabolic pathway flux also regulates excitability and signaling. A coherent understanding of the links between energy availability and metabolism, neural signaling, and higher-level phenotypes like behavior requires a synthesis of the understanding of glial and neuronal metabolic dynamics...
September 29, 2017: Glia
https://www.readbyqxmd.com/read/28935952/application-of-bio-orthogonal-proteome-labeling-to-cell-transplantation-and-heterochronic-parabiosis
#7
Yan Liu, Michael J Conboy, Melod Mehdipour, Yutong Liu, Thanhtra P Tran, Aaron Blotnick, Prasanna Rajan, Thalie Cavalcante Santos, Irina M Conboy
Studies of heterochronic parabiosis demonstrated that with age, the composition of the circulatory milieu changes in ways that broadly inhibit tissue regenerative capacity. In addition, local tissue niches have age-specific influences on their resident stem cells. Here we use bio-orthogonal proteome labeling for detecting in vivo proteins present only in transplanted myoblasts, but not in host tissue, and proteins exclusive to one young mouse and transferred during parabiosis to its old partner. We use a transgenic mouse strain that ubiquitously expresses a modified tRNA methionine synthase, metRS, which preferentially incorporates the methionine surrogate azido-nor-leucine (ANL) into newly generated proteins...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28920841/desertibacillus-haloalkaliphilus-gen-nov-sp-nov-isolated-from-a-saline-desert
#8
Hitarth B Bhatt, M Azmatunnisa Begum, Sasikala Chintalapati, Venkata Ramana Chintalapati, Satya P Singh
Two Gram-stain-positive, rod-shaped and endospore-forming bacteria that represent a single species, designated strains KJ1-10-99T and KJ1-10-93, were isolated from a saline desert of Little Rann of Kutch, Gujarat, India. Analysis of 16S rRNA gene sequences revealed that the isolates belonged to the family Bacillaceae and were closely related to each other with 16S rRNA gene sequence similarity of 99.9 %. However, these two isolates formed a novel phylogenetic branch within this family. Both strains were aerobic, catalase and oxidase positive, and could grow optimally at 37 °C and pH 9...
September 18, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28859934/acacia-nilotica-leaf-improves-insulin-resistance-and-hyperglycemia-associated-acute-hepatic-injury-and-nephrotoxicity-by-improving-systemic-antioxidant-status-in-diabetic-mice
#9
Manas Ranjan Saha, Priyankar Dey, Indrani Sarkar, Dilip De Sarker, Biswajit Haldar, Tapas Kumar Chaudhuri, Arnab Sen
ETHNOPHARMACOLOGICAL RELEVANCE: Acacia nilotica (L.) Delile is used as a traditional anti-diabetic remedy in Bangladesh, Pakistan, Egypt, Nigeria and is mentioned in Ayurveda as well. AIM: The objective of the study was to evaluate the ethnomedicinal claim of A. nilotica leaf (ANL) extract for its efficiency in ameliorating diabetic complications. MATERIALS AND METHODS: ANL was orally administrated (50 and 200mg/kg) to alloxanized mice (blood glucose > 200mg/dL) for 20d...
August 30, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28822180/-habitat-areas-extracting-of-poria-cocos-in-anhui-based-on-3s-technologies
#10
Luo Tian, Wen-Zuo Zhou, Wan-Hua He, Dan Lun, Dong-Hong Liu
"Adversity" is one primary element that impacts the pharmacology components of authentic Chinese herbal medicine. Knowledge about "adversity" is a precondition of yield estimation, quality monitoring, location selection and the geo-herbalism protection. Used 3S(GIS, RS and GPS) technology to combine multi-source key ecological factors of "Anling", and used parasitic relationships between organisms to extracting its suitable region for the first time. Results showed that the "Anling" were mainly distributed in Dabie coteau...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28808217/electromyography-and-fos-immunostaining-study-establish-a-possible-functional-link-between-trigeminal-proprioception-and-the-oculomotor-system-in-rats
#11
Houcheng Liang, Jingdong Zhang, Pifu Luo, Hongna Zhu, Ying Qiao, Anle Su, Ting Zhang
The objective of this study was to explore whether there was a functional link between trigeminal proprioception and the oculomotor system mediated through jaw muscle afferents. Electromyography (EMG) was undertaken of the levator palpebrae (LP) and superior rectus (SR), and Fos expression was detected in the brainstem following consecutive down-stretching of the lower jaw at 2-4 Hz in rats. Retrograde tracing was undertaken of the interstitial nucleus of Cajal and Darkschewitsch nucleus (INC/DN) pre-oculomotor neurons...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28702611/atomistic-dynamics-of-sulfur-deficient-high-symmetry-grain-boundaries-in-molybdenum-disulfide
#12
Jinhua Hong, Yanlei Wang, Anle Wang, Danhui Lv, Chuanhong Jin, Zhiping Xu, Matt I J Probert, Jun Yuan, Ze Zhang
As a common type of structural defect, grain boundaries (GBs) play an important role in tailoring the physical and chemical properties of bulk crystals and their two-dimensional (2D) counterparts such as graphene and molybdenum disulfide (MoS2). In this study, we explore the atomic structures and dynamics of three kinds of high-symmetry GBs (α, β and γ) in monolayer MoS2. Atomic-resolution transmission electron microscopy (TEM) is used to characterize their formation and evolutionary dynamics, and atomistic simulation based analysis explains the size distribution of α-type GBs observed under TEM and the inter-GB interaction, revealing the stabilization mechanism of GBs by pre-existing sulfur vacancies...
July 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28613071/potent-inhibitor-of-drug-resistant-hiv-1-strains-identified-from-the-medicinal-plant-justicia-gendarussa
#13
Hong-Jie Zhang, Emily Rumschlag-Booms, Yi-Fu Guan, Dong-Ying Wang, Kang-Lun Liu, Wan-Fei Li, Van H Nguyen, Nguyen M Cuong, Djaja D Soejarto, Harry H S Fong, Lijun Rong
Justicia gendarussa, a medicinal plant collected in Vietnam, was identified as a potent anti-HIV-1 active lead from the evaluation of over 4500 plant extracts. Bioassay-guided separation of the extracts of the stems and roots of this plant led to the isolation of an anti-HIV arylnaphthalene lignan (ANL) glycoside, patentiflorin A (1). Evaluation of the compound against both the M- and T-tropic HIV-1 isolates showed it to possess a significantly higher inhibition effect than the clinically used anti-HIV drug AZT...
June 23, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28571400/design-and-calibration-of-hot-electron-spectrometer-array-for-angle-resolved-measurement
#14
Huiya Liu, Honghai An, Jie Shen, Ning Kang, Shenlei Zhou, Anle Lei, Zunqi Lin
A hot-electron spectrometer array with two-dimensional distribution has been designed with a wide-angle range and high-energy resolution to measure the spatially resolved electron spectra for high-power-laser plasma interaction experiments. It consisted of 19 identical electron spectrometers set in three directions with an interval of 10°. Each electron spectrometer was designed with a uniform magnetic field to detect electrons in the range from 20 to 500 keV. The spectrometers were calibrated using electrons from an accelerator...
May 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28559280/crystal-structure-of-the-thioesterification-conformation-of-bacillus-subtilis-o-succinylbenzoyl-coa-synthetase-reveals-a-distinct-substrate-binding-mode
#15
COMPARATIVE STUDY
Yaozong Chen, Tin Lok Li, Xingbang Lin, Xin Li, Xiang David Li, Zhihong Guo
o-Succinylbenzoyl-CoA (OSB-CoA) synthetase (MenE) is an essential enzyme in bacterial vitamin K biosynthesis and an important target in the development of new antibiotics. It is a member of the adenylating enzymes (ANL) family, which reconfigure their active site in two different active conformations, one for the adenylation half-reaction and the other for a thioesterification half-reaction, in a domain-alternation catalytic mechanism. Although several aspects of the adenylating mechanism in MenE have recently been uncovered, its thioesterification conformation remains elusive...
July 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28520214/mtorc1-inhibits-nf-%C3%AE%C2%BAb-nfatc1-signaling-and-prevents-osteoclast-precursor-differentiation-in-vitro-and-in-mice
#16
Yue Zhang, Song Xu, Kai Li, Kang Tan, Kangyan Liang, Jian Wang, Junhui Shen, Wenchong Zou, Le Hu, Daozhang Cai, Changhai Ding, Mangmang Li, Guozhi Xiao, Bin Liu, Anling Liu, Xiaochun Bai
The mechanistic target of rapamycin complex 1 (mTORC1) is a critical sensor for bone homeostasis and bone formation; however, the role of mTORC1 in osteoclast development and the underlying mechanisms have not yet been fully established. Here, we found that mTORC1 activity declined during osteoclast precursors differentiation in vitro and in vivo. We further targeted deletion of Raptor (mTORC1 key component) or Tsc1 (mTORC1 negative regulator) to constitutively inhibit or activate mTORC1 in osteoclast precursors (monocytes/macrophages), using LyzM-cre mice...
September 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28507784/geraniin-attenuates-naloxone-precipitated-morphine-withdrawal-and-morphine-induced-tolerance-in-mice
#17
Ella Anle Kasanga, Eric Boakye-Gyasi, Robert Peter Biney, James Oppong Kyekyeku, Christian Agyare, Eric Woode
BACKGROUND AND AIM: Potentially life-threatening and unpleasant side effects associated with some analgesics have fueled the drive for the search for more analgesics with better side effect profiles. Geraniin, the most dominant secondary metabolite in the aqueous extract of the aerial parts of Phyllanthus muellerianus, has been shown to possess antinociceptive properties mediated partly by opioidergic mechanisms. The purpose of this study is to determine whether geraniin exhibits tolerance and if it is able to ameliorate withdrawal signs in naloxone-precipitated morphine withdrawal...
April 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28450969/characterization-of-carboxylic-acid-reductases-as-enzymes-in-the-toolbox-for-synthetic-chemistry
#18
William Finnigan, Adam Thomas, Holly Cromar, Ben Gough, Radka Snajdrova, Joseph P Adams, Jennifer A Littlechild, Nicholas J Harmer
Carboxylic acid reductase enzymes (CARs) meet the demand in synthetic chemistry for a green and regiospecific route to aldehydes from their respective carboxylic acids. However, relatively few of these enzymes have been characterized. A sequence alignment with members of the ANL (Acyl-CoA synthetase/ NRPS adenylation domain/Luciferase) superfamily of enzymes shed light on CAR functional dynamics. Four unstudied enzymes were selected by using a phylogenetic analysis of known and hypothetical CARs, and for the first time, a thorough biochemical characterization was performed...
March 20, 2017: ChemCatChem
https://www.readbyqxmd.com/read/28450306/osteoblasts-support-megakaryopoiesis-through-production-of-interleukin-9
#19
Min Xiao, Yongkui Wang, Chen Tao, Zhenyu Wang, Jun Yang, Zhenguo Chen, Zhipeng Zou, Mangmang Li, Anling Liu, Chunhong Jia, Bin Huang, Bo Yan, Pinglin Lai, Changhai Ding, Daozhang Cai, Guozhi Xiao, Yu Jiang, Xiaochun Bai
Severe thrombocytopenia is a significant challenge in patients undergoing myelosuppressive chemotherapy for malignancies. Understanding the biology of platelet-producing megakaryocytes development in the bone marrow microenvironment may facilitate the development of novel therapies to stimulate platelet production and prevent thrombocytopenia. We report here that osteoblasts supported megakaryopoiesis by secreting interleukin-9 (IL-9), which stimulated IL-9 receptor (IL-9R)/Stat3 signaling in promoting megakaryopoiesis...
June 15, 2017: Blood
https://www.readbyqxmd.com/read/28419802/programming-post-translational-control-over-the-metabolic-labeling-of-cellular-proteins-with-a-noncanonical-amino-acid
#20
Emily E Thomas, Naresh Pandey, Sarah Knudsen, Zachary T Ball, Jonathan J Silberg
Transcriptional control can be used to program cells to label proteins with noncanonical amino acids by regulating the expression of orthogonal aminoacyl tRNA synthetases (aaRSs). However, we cannot yet program cells to control labeling in response to aaRS and ligand binding. To identify aaRSs whose activities can be regulated by interactions with ligands, we used a combinatorial approach to discover fragmented variants of Escherichia coli methionyl tRNA synthetase (MetRS) that require fusion to associating proteins for maximal activity...
May 17, 2017: ACS Synthetic Biology
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