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https://www.readbyqxmd.com/read/29225007/high-sensitivity-quantitative-analysis-reveals-the-non-linear-relationship-between-the-dose-and-deposition-of-diphenylarsinic-acid-in-the-rat-central-nervous-system-following-its-subchronic-exposure
#1
Tomoyuki Masuda, Kazuhiro Ishii, Tomohiro Nakayama, Nobuaki Iwasaki, Yasuyuki Shibata, Akira Tamaoka
In the year 2003, the residents of Kamisu, Japan, were exposed to pentavalent organic arsenic diphenylarsinic acid (DPAA[V]) via their normal drinking water. Following the exposure, they developed cerebellar and brainstem symptoms. Although the relatively high dose of DPAA(V) is assumed to have caused their symptoms, the relationship between the exposed dose of DPAA(V) and the level of their deposition in the central nervous system (CNS) remains unclear. Using liquid chromatography-tandem mass spectrometry, we examined the deposition of DPAA(V) and its pentavalent metabolites in the CNS tissues of Crl:CD(SD) rats following the administration of DPAA(V) for 28days...
December 7, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29220758/interaction-of-a-digestive-protease-candida-rugosa-lipase-with-three-surfactants-investigated-by-spectroscopy-molecular-docking-and-enzyme-activity-assay
#2
Rui Zhang, Yang Liu, Xinran Huang, Mengchen Xu, Rutao Liu, Wansong Zong
The extensive use of surfactants in food, laundry products and agriculture has caused concern about their biosafety. However, few studies have been done on their potential effect on the lipase which has always been used with surfactants in food and laundry industry. Herein, we investigated the interaction of three surfactants (sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS), sodium lauryl sulfonate (SLS)) with Candida rugosa lipase (CRL), which is a popular biocatalyst used regularly with surfactants...
December 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29213016/changes-in-topographical-relation-between-the-ductus-arteriosus-and-left-subclavian-artery-in-human-embryos-a-study-using-serial-sections
#3
Hiroshi Abe, Masahito Yamamoto, Ryoji Suzuki, Ming Zhou, Gen Murakami, José F Rodríguez-Vázquez
At birth, the ductus arteriosus (DA) merges with the aortic arch in the caudal side of the origin of the left subclavian artery (ltSCA). Since the SCA (seventh segmental arteries) were fixed on the levels of the seventh cervical-first thoracic vertebral bodies, the confluence of the DA should migrate caudally toward the lower level. We aimed to describe the changing topographical anatomy of the DA and SCA using serial sections. First, we examined serial sagittal sections of 11 embryos (Carnegie stage 15-18), but the specimens were clearly divided into 2 groups with and without the lower confluence of the DA...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/29211707/obesity-and-obesogenic-growth-are-both-highly-heritable-and-modified-by-diet-in-a-nonhuman-primate-model-the-african-green-monkey-chlorocebus-aethiops-sabaeus
#4
C A Schmitt, S K Service, A J Jasinska, T D Dyer, M J Jorgensen, R M Cantor, G M Weinstock, J Blangero, J R Kaplan, N B Freimer
OBJECTIVE: In humans, the ontogeny of obesity throughout the life course and the genetics underlying it has been historically difficult to study. We compared, in a non-human primate model, the lifelong growth trajectories of obese and non-obese adults, to assess the heritability of and map potential genomic regions implicated in growth and obesity. STUDY POPULATION: A total of 905 African green monkeys, or vervets (Chlorocebus aethiops sabaeus) (472 females, 433 males) from a pedigreed captive colony...
December 6, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29210752/lactobacillus-casei-beneficially-modulates-immuno-coagulative-response-in-an-endotoxemia-model
#5
Cecilia Haro, María E Mónaco, Marcela Medina
: The current study aims at evaluating the effect of the oral administration of Lactobacillus casei CERELA (CRL) 431 on parameters implicated in inflammation-coagulation interaction using a model of acute inflammation induced by lipopolysaccharide (LPS) in mice. Six-week-old Balb/c mice were treated with L. casei for 5 consecutive days. Then treated and untreated mice received an LPS injection (L. casei + LPS and LPS groups, respectively). Liver and kidney were removed, blood samples were obtained, and hemostatic and inflammatory parameters were evaluated at different times post LPS injection...
November 27, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29206163/frozen-microemulsions-for-maple-immobilization-of-lipase
#6
Valeria Califano, Francesco Bloisi, Giuseppe Perretta, Antonio Aronne, Giovanni Ausanio, Aniello Costantini, Luciano Vicari
Candida rugosa lipase (CRL) was deposited by matrix assisted pulsed laser evaporation (MAPLE) in order to immobilize the enzyme with a preserved native conformation, which ensures its catalytic functionality. For this purpose, the composition of the MAPLE target was optimized by adding the oil phase pentane to a water solution of the amino acid 3-(3,4-dihydroxyphenyl)-2-methyl-l-alanine (m-DOPA), giving a target formed by a frozen water-lipase-pentane microemulsion. Fourier transform infrared (FTIR) spectroscopy and atomic force microscopy (AFM) were used to investigate the structure of MAPLE deposited lipase films...
December 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29203403/carcinogenicity-assessment-of-baricitinib-in-tg-rash2-mice-and-sprague-dawley-crl-cd-rats
#7
Mark Carfagna, Ellen Cannady, Thomas Ryan, Jay Herman, Lew Truex, Kanchan Narwani, John Sullivan
Baricitinib is a potent and selective Janus kinase (JAK)1 and JAK2 inhibitor, and is approved for the treatment of moderately to severely active RA in adults in Europe, Japan, and other countries. This study evaluated the carcinogenic potential of baricitinib in Tg. rasH2 mice and Sprague-Dawley (Crl:CD) rats. Baricitinib was administered daily by oral gavage to Crl:CD rats for up to 94 weeks (dose levels of 0, 1, 3, or 8 mg/kg for males and 0, 3, 8, or 25 mg/kg for females) and to Tg. rasH2 mice for 26 weeks (dose levels of 0, 15, 40, or 300 mg/kg for males and 0, 10, 30, or 150 mg/kg for females)...
December 1, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29199583/antimelanomic-effects-of-high-and-low-molecular-weight-bioactive-subfractions-isolated-from-the-mossy-maze-mushroom-cerrena-unicolor-agaricomycetes
#8
Matgorzata Statkiewicz, Anna Matuszewska, Magdalena Jaszek, Grzegorz Janusz, Monika Osinska, Justyna Sulej, Dawid Stefaniuk, Michat Mikula, Jerzy Ostrowski
Three bioactive fractions isolated from Cerrena unicolor cultures-crude endopolysaccharide (c-EPS), laccase, and a subfraction of low-molecular weight secondary metabolites-were used to determine potential cytotoxic effects on the mouse melanoma B16-F10 cell line (American Type Culture Collection CRL-6475). The results obtained prove that all examined fractions exhibited activity against the investigated tumor cells. In addition, an evident immunomodulatory effect of the c-EPS fraction was observed. Our results show that the levels of 2 cytokines (tumor necrosis factor-a and chemokine ligand 2) in mouse inner medullary collecting duct mIMCD-3 cells (American Type Culture Collection CRL-2123) stimulated by c-EPS were significantly higher...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/29197783/lotus-tetragonolobus-and-maackia-amurensis-lectins-influence-phospho-i%C3%AE%C2%BAb%C3%AE-il-8-lewis-b-and-h-type-1-glycoforms-levels-in-h-pylori-infected-crl-1739-gastric-cancer-cells
#9
Iwona Radziejewska, Małgorzata Borzym-Kluczyk, Katarzyna Leszczyńska, Joanna Wosek, Anna Bielawska
PURPOSE: Attachment of Helicobacter pylori to the mucous epithelial cells and the mucous layer is said to be a crucial step for infection development. Sugar antigens of gastric mucins (MUC5AC, MUC1) can act as receptors for bacterial adhesins. The aim of the study was to investigate if Lotus tetragonolobus and Maackia amurensis lectins influence the level of MUC1, MUC5AC, Lewis b, H type 1, sialyl Lewis x, phospho-IκBα and interleukin 8 in Helicobacter pylori infected gastric cancer cells...
November 30, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/29197294/gestational-ultrasonography-and-dopplerfluxometry-in-capuchin-monkeys-sapajus-apella-zoometric
#10
S A Miranda, D L Leão, K G Oliveira, I S Sodré, S F S Domingues
The objectives of the current study were as follows: 1) to evaluate blood flow in the uterine (UA) and umbilical (Uma) arteries in pregnant capuchin monkeys by measuring the resistive index (RI) and pulsatility index (PI); 2) to determine the presence or absence of the early diastolic notch and diastolic flow in the UA and Uma flow waveforms, respectively; 3) to perform conceptus echobiometry for fetal growth assessment during pregnancy; 4) to describe the moment that the fetal organs were initially observed; and 5) to determine when the diagnosis of fetal gender is possible...
November 26, 2017: Theriogenology
https://www.readbyqxmd.com/read/29195991/molecular-identification-and-technological-characterization-of-lactic-acid-bacteria-isolated-from-fermented-kidney-beans-flours-phaseolus-vulgaris-l-and-p-coccineus-in-northwestern-argentina
#11
Gabriel D Sáez, Elvira M Hébert, Lucila Saavedra, Gabriela Zárate
Legumes are an important protein source in developing countries and their flours represent an attractive alternative for the manufacture of gluten free products. In the present study, 4 kidney bean varieties (Alubia, Pallar, Black and Red beans) commonly cultivated in northwestern Argentina, were milled and spontaneously fermented in order to isolate and select autochthonous lactic acid bacteria (LAB) with relevant technological and functional properties for usage as starter cultures. Twelve doughs were fermented with daily back-slopping at 37°C for 6days and evolution of total mesophiles, lactic acid bacteria, and yeasts and molds populations were followed by plate counting...
December 2017: Food Research International
https://www.readbyqxmd.com/read/29191448/adverse-perinatal-outcomes-associated-with-crown-rump-length-discrepancy-in-in%C3%A2-vitro-fertilization-pregnancies
#12
Kristy Cho, Caitlin Dunne, Arianne Y K Albert, Jon C Havelock
OBJECTIVE(S): To determine whether an association exists between small crown-rump length (CRL) and adverse obstetrical outcomes in pregnancies conceived by IVF and to compare a CRL reference based on IVF pregnancies to a reference based on spontaneous pregnancies. DESIGN: Retrospective cohort study. CRL was classified as small by comparing it with the local university hospital maternal fetal medicine standard and the Monash IVF reference chart. SETTING: University-affiliated fertility center...
November 28, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/29186046/synthesis-and-evaluation-of-thiochroman-4-one-derivatives-as-potential-leishmanicidal-agents
#13
Esteban Vargas, Fernando Echeverri, Iván D Vélez, Sara M Robledo, Wiston Quiñones
The S-containing heterocyclic compounds benzothiopyrans or thiochromones stand out as having promising biological activities due to their structural relationship with chromones (benzopyrans), which are widely known as privileged scaffolds in medicinal chemistry. In this work, we report the synthesis of 35 thiochromone derivatives and the in vitro antileishmanial and cytotoxic activities. Compounds were tested against intracellular amastigotes of Leishmania panamensis and cytotoxic activity against human monocytes (U-937 ATCC CRL-1593...
November 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29175064/difference-between-mean-gestational-sac-diameter-and-crown-rump-length-as-a-marker-of-first-trimester-pregnancy-loss-after-in%C3%A2-vitro-fertilization
#14
Joshua D Kapfhamer, Sruthi Palaniappan, Karen Summers, Kristen Kassel, Abigail C Mancuso, Ginny L Ryan, Divya K Shah
OBJECTIVE: To investigate whether the difference between mean gestational sac diameter and crown-rump length (mGSD - CRL) is associated with first-trimester pregnancy loss or adverse pregnancy outcomes after in vitro fertilization (IVF) and to determine if mGSD - CRL is a better predictor of pregnancy loss than either measurement alone. DESIGN: Retrospective cohort study. SETTING: University hospital. PATIENT(S): A total of 1,243 IVF cycles with fresh or cryopreserved autologous embryo transfers resulting in singleton gestations performed at the University of Iowa Hospitals and Clinics from January 2005 through December 2014...
November 23, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/29166797/application-of-dynamic-thermal-imaging-in-a-photocarcinogenesis-mouse-model
#15
Yoo Sang Baek, Jaeyoung Kim, Geo Han, Chil Hwan Oh
INTRODUCTION In clinical practice and experimental settings, cutaneous premalignant and malignant lesions are commonly diagnosed by histopathological biopsy. However, this technique is invasive and results in functional or cosmetic defects. Dynamic thermal imaging is a non-invasive technique that quantifies the infrared (IR) radiation emitted by a subject after the introduction of external thermal stimuli (such as heat or cold). METHODS Forty hairless albino (Crl:SKH1-hr) mice were randomized to the control group or the experimental group...
November 22, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29166640/lactic-acid-bacteria-from-andean-grain-amaranth-a-source-of-vitamins-and-functional-value-enzymes
#16
Silvana L Carrizo, Cecilia E Montes de Oca, María Elvira Hébert, Lucila Saavedra, Graciela Vignolo, Jean Guy LeBlanc, Graciela Celestina Rollán
Amaranth is a rediscovered pseudocereal with high nutritional properties. Lactic acid fermentation can increase the functional and nutritional value of foods. The aims of this study were to isolate and evaluate the functionality of lactic acid bacteria (LAB) from amaranth. LAB strains (n = 29) isolated from amaranth sourdough and grains included Lactobacillus (L.) plantarum (n = 8), L. rhamnosus (n = 6), Enterococcus (E.) mundtii (n = 4), E. hermanniensis (n = 3), E. durans (n = 1), Enterococcus sp. (n = 1), Leuconostoc (Lc...
November 23, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29156995/combined-repeated-dose-and-reproductive-developmental-toxicity-screening-test-of-benzene-1-1-oxybis-tetrapropylene-derivs-in-rats
#17
Yasuhiro Tsubokura, Ryuichi Hasegawa, Sunao Aso, Toshio Kobayashi, Takayuki Koga, Satsuki Hoshuyama, Yutaka Oshima, Katsumi Miyata, Yuji Kusune, Takako Muroi, Naoki Hashizume, Yoshiyuki Inoue, Shozo Ajimi, Kotaro Furukawa
We have conducted animal toxicity tests of chemicals for a chemical safety program implemented by the Ministry of Economy, Trade and Industry of Japan. Here we conducted a combined repeated-dose and reproductive/developmental toxicity screening test of benzene, 1,1'-oxybis-, tetrapropylene derivs. (BOTD). BOTD was administered to 9-week-old Crl:CD(SD) male and female rats by gavage at 0, 40, 200, or 1000 mg/kg/day. Males were treated for 42 days including mating period. Females were treated for 42-53 days through the premating, mating, pregnancy, and until Day 4 of lactation periods...
November 20, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29149173/trade-off-and-flexibility-in-the-dynamic-regulation-of-the-cullin-ring-ubiquitin-ligase-repertoire
#18
Ronny Straube, Meera Shah, Dietrich Flockerzi, Dieter A Wolf
Cullin-RING ubiquitin ligases (CRLs) catalyze the ubiquitylation of substrates many of which are degraded by the 26S proteasome. Their modular architecture enables recognition of numerous substrates via exchangeable substrate receptors that competitively bind to a cullin scaffold with high affinity. Due to the plasticity of these interactions there is ongoing uncertainty how cells maintain a flexible CRL repertoire in view of changing substrate loads. Based on a series of in vivo and in vitro studies, different groups proposed that the exchange of substrate receptors is mediated by a protein exchange factor named Cand1...
November 17, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29130778/lack-of-induced-mutagenesis-in-e-coli-or-human-lymphoblast-cell-line-upon-long-term-sub-culturing-in-medium-from-irradiated-meat
#19
Sachin N Hajare, Jyoti Tripathi, Satyendra Gautam
PURPOSE: Current study was aimed to enhance the confidence of consumers as well as entrepreneurs towards food irradiation program. MATERIALS AND METHODS: In this work, safety of high dose (25 kGy) irradiated meat samples (HDIMS) was ascertained by scoring mutation frequency through a long-term sub-culturing study in Escherichia coli MG1655 cells (ATCC 700926) up to 1500 generations (at 1%), 250 generations (at 5 and 10%) and human lymphoblast thymidine kinase heterozygote (TK6) cell line (ATCC CRL-8015) [at two gene loci, tk(-/+) (thymidine kinase) and hprt(+) (Hypoxanthine Phosphoribosyltransferase)] up to 156 generations using goat meat sample...
November 13, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/29105173/the-blechschmidt-collection-revisiting-specimens-from-a-historical-collection-of-serially-sectioned-human-embryos-and-fetuses-using-modern-imaging-techniques
#20
Reina Miyazaki, Haruyuki Makishima, Jörg Männer, Hans-Georg Sydow, Chigako Uwabe, Tetsuya Takakuwa, Christoph Viebahn, Shigehito Yamada
Along with the Carnegie Collection in the United States and the Kyoto Collection in Japan, the Blechschmidt Collection (Georg-August-University of Göttingen, Germany) is a major historical human embryo and fetus collection. These collections are of enormous value to human embryology; however, due to the nature of the historical histological specimens, some stains are fading in color, and some glass slides are deteriorating over time. To protect these specimens against such degradation and ensure their future usefulness, we tried to apply modern image scanning and computational reconstruction...
November 3, 2017: Congenital Anomalies
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