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https://www.readbyqxmd.com/read/29458215/factors-associated-with-placental-vascularization-measured-by-3d-power-doppler-ultrasonographic-sphere-biopsy-between-11-and-14-weeks-of-gestation
#1
Suzanne Demers, Amelie Boutin, Regina Dembickaja, Mercedes Campanero, Kypros Nicolaides
OBJECTIVE: Preeclampsia is associated with placental vascularization disorders. Ultrasonographic sphere biopsy (USSB) of the placenta can estimate the vascularization of the placenta and potentially the risk of preeclampsia. We aimed to explore the factors related to placental vascularization measured with USSB in the first trimester. STUDY DESIGN: A prospective cohort was conducted in women recruited at 11 to 14 weeks. Three-dimensional acquisition of the placenta with power Doppler was undertaken along with crown-rump length (CRL)...
February 19, 2018: American Journal of Perinatology
https://www.readbyqxmd.com/read/29457688/a-network-of-regulators-promotes-dehydration-tolerance-in-escherichia-coli
#2
Annie I Chen, Mark Goulian
The ability to survive conditions of low water activity is critical for the survival of many bacteria in the environment and facilitates disease transmission through food and contaminated surfaces. However, the molecular mechanisms that enable bacteria to withstand this condition remain poorly understood. Here we describe a network of regulators in Escherichia coli that are important for this bacterium to survive dehydration. We found that the transcriptional regulator DksA and the general stress response regulator RpoS play a critical role...
February 19, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29456582/assessing-the-accuracy-of-ultrasound-estimation-of-gestational-age-during-routine-antenatal-care-in-in-vitro-fertilization-ivf-pregnancies
#3
Bridget Knight, Aaron Brereton, Roy J Powell, Helen Liversedge
Introduction: In the UK an accurate gestational age is confirmed by ultrasound measured foetal crown rump length (CRL) at 11 + 2-14 + 1 weeks of gestation. The currently recommended Robinson and Fleming crown rump length reference chart was develop in 1975. Advances in ultrasound technology and standardized crown rump length measurement training could mean this is now out of date. Our study aimed to assess its accuracy in current routine antenatal care. Methods: Retrospective data from 178 IVF pregnancies seen for routine antenatal care at a UK Regional Maternity Unit between 1 January 2006 and 1 January 2016 was retrieved...
February 2018: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/29451850/determination-of-14-aminoglycosides-by-lc-ms-ms-using-molecularly-imprinted-polymer-solid-phase-extraction-for-clean-up
#4
Marie-Claude Savoy, Pei Mun Woo, Pauline Ulrich, Adrienne Tarres, Pascal Mottier, Aurélien Desmarchelier
A LC-MS/MS method for screening fourteen aminoglycosides in foodstuffs of animal origin is presented. Its scope includes raw materials and processed ingredients but also finished products composed of milk, meat, fish, egg or fat. Aminoglycosides are extracted in an acidic aqueous solution, which is first recovered after centrifugation, then diluted with a basic buffer and finally purified by molecularly imprinted polymer-solid phase extraction (MIP-SPE). Analytes are detected within 8 min by ion-pair reversed phase LC-MS/MS...
February 16, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29450620/targeting-the-neddylation-pathway-in-cells-as-a-potential-therapeutic-approach-for-diseases
#5
REVIEW
Jie Ying, Miaomiao Zhang, Xiaoyan Qiu, Yu Lu
The ubiquitin-proteasome system (UPS) is an important system that regulates the balance of intracellular proteins, and it is involved in the regulation of multiple vital biological processes. The approval of bortezomib for relapsed and refractory multiple myeloma has proven that agents targeting the UPS have the potential to be effective treatment strategies for diseases. Among of all of the components of the UPS, cullin-RING ligases (CRLs) are the focus of research. CRLs are the largest family of ubiquitin E3 ligases and they play a critical role in substrate binding...
February 15, 2018: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29448564/biocompatibility-evaluation-of-feldspathic-porcelain-with-nano-sized-silver-ion-particles
#6
Ji-Hyun Kim, Sang-Won Park, Hyun-Pil Lim, Chan Park, Kwi-Dug Yun
The major failure of dental restorations is caused by dental caries by S. mutans. This study evaluated the effect of nanosized silver ions in feldspathic porcelain on cytotoxicity and antimicrobial activity. The control group was feldspathic porcelain (Noritake EX-3, Kuraray Noritake Dental Inc., Japan) that did not contain Ag (silver). The experimental groups were feldspathic porcelain mixed with colloidal solutions of nanosized silver ions in mixtures of 5% 10%, 20%, 30%. Cell activity assays evaluated with osteoblast hFOB 1...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29441041/altered-brain-functional-connectome-in-migraine-with-and-without-restless-legs-syndrome-a-resting-state-functional-mri-study
#7
Fu-Chi Yang, Kun-Hsien Chou, Ai-Ling Hsu, Jong-Ling Fuh, Jiing-Feng Lirng, Hung-Wen Kao, Ching-Po Lin, Shuu-Jiun Wang
Background: Migraine is frequently comorbid with restless legs syndrome (RLS), both displaying functional connectivity (FC) alterations in multiple brain networks, although the neurological basis of this association is unknown. Methods: We performed resting-state functional magnetic resonance imaging and network-wise analysis of FC in migraine patients with and without RLS and healthy controls (CRL). Network-based statistics (NBS) and composite FC matrix analyses were performed to identify the patterns of FC changes...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29438612/high-affinity-peptidomimetic-inhibitors-of-the-dcn1-ubc12-protein-protein-interaction
#8
Hai-Bin ZHou, Weihua Zhou, Bing Zhou, Liu Liu, Ting-Rong Chern, Krishnapriya Chinnaswamy, Jianfeng Lu, Denzil Bernard, Chaoyie Yang, Shasha Li, Mi Wang, Jeanne A Stuckey, Yi Sun, Shaomeng Wang
The Cullin-RING ligases (CRLs) regulate the turnover of approximately 20% of the proteins in mammalian cells and are emerging therapeutic targets in human diseases. The activation of CRLs requires the neddylation of their cullin subunit, which is controlled by an activation complex consisting of Cullin-RBX1-UBC12-NEDD8-DCN1. Herein, we describe the design, synthesis and evaluation of peptidomimetics targeting the DCN1-UBC12 protein-protein interaction. Starting from a 12-residue UBC12 peptide, we have successfully obtained a series of peptidomimetic compounds that bind to DCN1 protein with KD values of <10 nM...
February 13, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29432837/vitamin-k2-a-menaquinone-present-in-dairy-products-targets-castration-resistant-prostate-cancer-cell-line-by-activating-apoptosis-signaling
#9
Subramanyam Dasari, Angela Lincy Prem Antony Samy, Andre Kajdacsy-Balla, Maarten C Bosland, Gnanasekar Munirathinam
The aim of this study was to evaluate the therapeutic effects of vitamin K2 (VK2) on castration-resistant prostate cancer (CRPC) and its anti-cancer mechanisms in a pre-clinical study using a VCaP cell line (ATCC ® CRL-2876™) which was established from a vertebral bone metastasis from a patient with hormone refractory prostate cancer. Our data showed that VK2 significantly inhibited CRPC VCaP cell proliferation in a dosedependent manner at 48 h treatment in vitro. In addition, VK2 reduced the migration potential of VCaP cells and inhibited anchorage-independent growth of these cells...
February 9, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29430723/artisanal-tanneries-potential-application-of-inoculants-formulated-with-lactic-acid-bacteria
#10
María A Correa Deza, Gladys I Martos, Marta Nuñez, Mario Fiori, Carla L Gerez, Graciela Font
In artisanal tanneries, the skins are immersed in cereals fermented by natural microbial flora in order to reduce the pH of the skin, an essential condition for carrying out the final step. The environmental thermal variation alters the fermentation process and affects the quality of the final product. The aim of this work was to isolate lactic acid bacteria from cereals mixture fermented in an artisanal tannery and to evaluate in vitro the acidifying activity of the strains as a first step for the formulation of a starter culture...
February 12, 2018: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/29415594/maternal-obesity-is-not-associated-with-increased-crown-rump-length-in-first-trimester-ultrasounds-of-singleton-gestations
#11
Geoffrey H Gordon, Kathleen M Antony, Emmanuel Sampene, Jesus Igor Iruretagoyena
OBJECTIVE: To evaluate whether or not obesity affects fetal growth in the first trimester of pregnancy. STUDY DESIGN: A retrospective cohort study of obese versus nonobese women in our ultrasound database was performed to compare crown-rump length (CRL), a surrogate of fetal growth, at the first-trimester genetic screening. RESULTS: A total of 50 obese and 50 nonobese women were included. CRL for both groups was performed at an average of 12wk5d ± 3 d...
February 7, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29408754/elective-abortion-clinical-practice-guidelines-from-the-french-college-of-gynecologists-and-obstetricians-cngof
#12
REVIEW
Christophe Vayssière, Adrien Gaudineau, Luisa Attali, Karima Bettahar, Sophie Eyraud, Philippe Faucher, Patrick Fournet, Danielle Hassoun, Marie Hatchuel, Christian Jamin, Brigitte Letombe, Teddy Linet, Marie Msika Razon, Alexandra Ohanessian, Hélène Segain, Solène Vigoureux, Norbert Winer, Sophie Wylomanski, Aubert Agostini
The number of elective abortions has been stable for several decades. Many factors explain women's choice of abortion in cases of unplanned pregnancies. Early initiation of contraceptive use and a choice of contraceptive choices appropriate to the woman's life are associated with lower rates of unplanned pregnancies. Reversible long-acting contraceptives should be favored as first-line methods for adolescents because of their effectiveness (grade C). Ultrasound scan before an elective abortion must be encouraged but should not be obligatory (professional consensus)...
January 26, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29380277/first-trimester-pregnancy-ultrasound-findings-as-a-function-of-method-of-conception-in-an-infertile-population
#13
Frauke von Versen-Höynck, Jenna S Petersen, Yueh-Yun Chi, Jing Liu, Valerie L Baker
PURPOSE: The aim of this study was to determine whether first trimester ultrasound measurements of crown rump length (CRL) and gestational sac diameter (GSD) differ depending on the method of conception among infertile women. METHOD: Infertile women, ages 21-50 years old, who conceived viable, singleton pregnancies via fresh embryo transfer (ET), frozen ET, non-in vitro fertilization (IVF) fertility treatment, or spontaneously were included in this observational cohort study at an academic fertility practice...
January 29, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29371152/the-performance-of-immobilized-candida-rugosa-lipase-on-various-surface-modified-graphene-oxide-nanosheets
#14
Faranak Jafarian, Abdol-Khalegh Bordbar, Atefeh Zare, Ahmadreza Khosropour
In this study, we have reported the synthesis of GON and its functionalization with 2, 4, 6-trichloro-1, 3, 5-triazine (TCT) through two routes, (a) directly reaction of GON with TCT (GON-1), and (b) reaction of GON with pre-functionalized TCT with 3-aminopropyltriethoxysilane (APTS) (GON-2). Subsequently, GON, GON-1 and GON-2 have been used as supports for immobilization of Candida rugosa lipase (CRL). Several techniques such as XRD, SEM, EDS, UV-Vis, CHNS, FTIR and AFM were applied to characterize the nano-structures and success of synthesis, functionalization and CRL immobilization processes...
January 22, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29361671/mechanisms-and-controversies-in-mutant-cul3-mediated-familial-hyperkalemic-hypertension
#15
Mohammed Zubaerul Ferdaus, James A McCormick
Autosomal dominant mutations in Cullin3 (Cul3) cause the most severe form of Familial Hyperkalemic Hypertension (FHHt). Cul3 mutations cause skipping of exon 9 which results in an internal deletion of 57 amino acids from the CUL3 protein (CUL3-∆9). The precise mechanism by which this altered form of CUL3 causes FHHt is controversial. CUL3 is a member of the Cullin-Ring ubiquitin Ligase (CRL) family which mediates ubiquitination and thus degradation of cellular proteins including With-no-lysine [K] kinases (WNKs)...
January 17, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29356121/flow-cytometric-method-for-scoring-rat-liver-micronuclei-with-simultaneous-assessments-of-hepatocyte-proliferation
#16
Svetlana L Avlasevich, Sumee Khanal, Priyanka Singh, Dorothea K Torous, Jeffrey C Bemis, Stephen D Dertinger
The current report describes a newly devised method for automatically scoring the incidence of rat hepatocyte micronuclei (MNHEP) via flow cytometry, with concurrent assessments of hepatocyte proliferation-frequency of Ki-67-positive nuclei, and the proportion of polyploid nuclei. Proof-of-concept data are provided from experiments performed with 6-week old male Crl:CD(SD) rats exposed to diethylnitrosamine (DEN) or quinoline (QUIN) for 3 or 14 consecutive days. Non-perfused liver tissue was collected 4 days after cessation of treatment in the case of 3-day studies, or 1 day after last administration in the case of 14-day studies for processing and flow cytometric analysis...
January 22, 2018: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29346035/determination-of-105-antibiotic-anti-inflammatory-antiparasitic-agents-and-tranquilizers-by-lc-ms-ms-based-on-an-acidic-quechers-like-extraction
#17
Aurélien Desmarchelier, Kaïli Fan, Mai Minh Tien, Marie-Claude Savoy, Adrienne Tarres, Denis Fuger, Alexandre Goyon, Thomas Bessaire, Pascal Mottier
A procedure for screening 105 veterinary drugs in foods by liquid chromatography tandem mass-spectrometry (LC-MS/MS) is presented. Its scope encompasses raw materials of animal origin (milk, meat, fish, egg and fat) but also related processed ingredients and finished products commonly used and manufactured by food business operators. Due to the complexity of the matrices considered and to efficiently deal with losses during extraction and matrix effects during MS source ionisation, each sample was analyzed twice, that is "unspiked" and "spiked at the screening target concentration" using a QuEChERS-like extraction...
January 18, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29337659/determination-of-five-tetracyclines-and-their-epimers-by-lc-ms-ms-based-on-a-liquid-liquid-extraction-with-low-temperature-partitioning
#18
Aurélien Desmarchelier, Sébastien Anizan, Mai Minh Tien, Marie-Claude Savoy, Cindy Bion
A LC-MS/MS method is presented for screening five tetracyclines and their epimers in a broad range of food products. The scope of matrices includes meat-, fish-, seafood-based products, various dairy ingredients, infant formulae and fats. The method principle is based on a liquid-liquid extraction with aqueous ethylenediaminetetraacetic acid (EDTA) and acetonitrile followed by a freezing step to promote phase separation at low temperature. After defatting with hexane, sample extracts were evaporated and reconstituted before injection onto the LC-MS/MS system...
January 16, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29331830/fetal-development-of-the-poeppig-s-woolly-monkey-lagothrix-poeppigii
#19
Rafael Dos Santos de Andrade, Frederico Ozanan Barros Monteiro, Hani Rocha El Bizri, Wilter Ricardo Russiano Vicente, Diva Anelie de Araujo Guimarães, Pedro Mayor
The intrauterine development is an evolutionary strategy that prepares the neonate for extra-uterine life, thus providing important information on the life history of species. In this study, we described the external and internal morphology of 25 fetuses of Poeppig's woolly monkeys (Lagothrix poeppigii) by taking advantage of a 10-year participatory collection of biological samples originated from animals hunted for subsistence purposes in the Peruvian Amazon. Logistic regressions estimated the probability of occurrence of each external morphological characteristic in relation to the crown-rump length (CRL)...
December 8, 2017: Theriogenology
https://www.readbyqxmd.com/read/29325466/the-correlation-between-birth-weight-and-insulin-like-growth-factor-binding-protein-1-igfbp-1-kisspeptin-1-kiss-1-and-three-dimensional-fetal-volume
#20
Gunsu Kimyon Comert, Sertac Esin, Gamze Sinem Caglar, Bulent Yirci, Sedat Ozdemir, Selda Demirtas, Omer Kandemir
PURPOSE: This study aimed to determine the relationship between birth weight, and maternal serum insulin-like growth factor-binding protein-1 (IGFBP-1) and kisspeptin-1 (KISS-1) levels, and first-trimester fetal volume (FV) based on three-dimensional ultrasonography. MATERIALS AND METHODS: The study included 142 pregnant women at gestational week 11°-136. All fetuses were imaged ultrasonographically by the same physician. Maternal blood samples were collected at the time of ultrasonographic evaluation and analyzed for IGFBP-1 and KISS-1 levels via enzyme-linked immunosorbent assay (ELISA)...
January 24, 2018: Journal of Maternal-fetal & Neonatal Medicine
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