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https://www.readbyqxmd.com/read/28334953/early-motor-phenotype-detection-in-a-female-mouse-model-of-rett-syndrome-is-improved-by-cross-fostering
#1
Annie Vogel Ciernia, Michael Pride, Blythe Durbin-Johnson, Adriana Noronha, Alene Chang, Dag H Yasui, Jacqueline N Crawley, Janine M LaSalle
Rett syndrome (RTT) is an X-linked neurodevelopmental disorder caused by mutations in the gene encoding methyl CpG binding protein 2 (MeCP2) that occur sporadically in 1:10,000 female births. RTT is characterized by a period of largely normal development followed by regression in language and motor skills at 6-18 months of age. Mecp2 mutant mice recapitulate many of the clinical features of RTT, but the majority of behavioral assessments have been conducted in male Mecp2 hemizygous null mice as offspring of heterozygous dams...
March 11, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28332333/allo-hla-cross-reactivities-of-cmv-flu-and-vzv-specific-memory-t-cells-are-shared-by-different-individuals
#2
H van den Heuvel, K M Heutinck, E M W van der Meer-Prins, S L Yong, P P M C van Miert, J D H Anholts, M E I Franke-van Dijk, X Q Zhang, D L Roelen, R J M Ten Berge, F H J Claas
Virus-specific T cells can recognize allogeneic HLA (allo-HLA) through TCR cross-reactivity. The allospecificity often differs per individual ("private cross-reactivity"), but can also be shared by multiple individuals ("public cross-reactivity"). However, only a few examples of the latter have been described. Since these could facilitate alloreactivity prediction in transplantation, we aimed to identify novel public cross-reactivities of human virus-specific CD8+ T cells directed against allo-HLA by assessing their reactivity in mixed-lymphocyte reactions...
March 23, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28325837/threonine-eliminylation-by-bacterial-phosphothreonine-lyases-rapidly-causes-crosslinking-of-mapk-in-live-cells
#3
Benoit M Meijer, Suk Min Jang, Ida C Guerrera, Cerina Chhuon, Joanna Lipecka, Caroline Reisacher, Françoise Baleux, Philippe Sansonetti, Christian Muchardt, Laurence Arbibe
Old long-lived proteins contain dehydroalanine (Dha) and dehydrobutyrine (Dhb), two amino acids engendered by dehydration of serines and threonines respectively. While these residues have a suspected role in protein crosslink and aggregation, their direct implication has yet to be determined. Here, we have taken advantage of the ability of the enteropathogen Shigella to convert the phosphothreonine residue of the pT-X-pY consensus sequence of ERK and p38 into Dhb, and followed the impact of dehydration on the fate of the two MAPKs...
March 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28321061/effects-of-denosumab-on-bone-metabolic-markers-and-bone-mineral-density-in-patients-treated-with-glucocorticoids
#4
Masato Sawamura, Atsushi Komatsuda, Masaru Togashi, Hideki Wakui, Naoto Takahashi
Objective We performed a prospective study to determine the efficacy and safety of denosumab on bone metabolic indices and bone mineral density (BMD) in 29 patients receiving long-term glucocorticoids (GCs) who had clinical risk factors for fracture. Methods Among these patients, 16 had systemic lupus erythematosus (SLE), 6 RA, 4 other autoimmune diseases, and 3 renal diseases. All patients received donosumab 60 mg at baseline and 6 months. Serum N-terminal cross-linked telopeptide of type I collagen (NTX) and bone-specific alkaline phosphatase (BAP) levels were measured as bone metabolic indices...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28317030/blind-testing-cross-linking-mass-spectrometry-under-the-auspices-of-the-11-th-critical-assessment-of-methods-of-protein-structure-prediction-casp11
#5
Adam Belsom, Michael Schneider, Lutz Fischer, Mahmoud Mabrouk, Kolja Stahl, Oliver Brock, Juri Rappsilber
Determining the structure of a protein by any method requires various contributions from experimental and computational sides. In a recent study, high-density cross-linking/mass spectrometry (HD-CLMS) data in combination with ab initio structure prediction determined the structure of human serum albumin (HSA) domains, with an RMSD to X-ray structure of up to 2.5 Å, or 3.4 Å in the context of blood serum. This paper reports the blind test on the readiness of this technology through the help of Critical Assessment of protein Structure Prediction (CASP)...
December 9, 2016: Wellcome Open Res
https://www.readbyqxmd.com/read/28315582/ionic-liquid-assisted-synthesis-of-composition-tunable-cross-linked-agpt-aerogels-with-enhanced-electrocatalysis
#6
Jiu-Ju Feng, Xiao-Xiao Lin, Li-Xian Chen, Meng-Ting Liu, Junhua Yuan, Ai-Jun Wang
A facile one-pot coreduction strategy was developed to synthesize composition-tunable cross-linked AgPt aerogels, where ionic liquid (1-aminopropyl-3-methylimidazolium bromide, [APMIm]Br) played a significant role in controlling the morphology and structure. During the synthesis progress, Br(-) easily reacted with Ag(+) to form AgBr precipitate and consequently slowed down the reducing rate of Ag(+), as well as acting as a capping agent to promote the anisotropic growth of AgPt aerogels, as mainly demonstrated by the electronic microscopy, Brunauer-Emmett-Teller, X-ray diffraction and X-ray photoelectron spectroscopy analysis...
March 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28300705/comparison-of-wear-rate-and-osteolysis-between-second-generation-annealed-and-first-generation-remelted-highly-cross-linked-polyethylene-in-total-hip-arthroplasty-a-case-control-study-at-a-minimum-of-five-years
#7
Ryohei Takada, Tetsuya Jinno, Daisuke Koga, Kazumasa Miyatake, Takeshi Muneta, Atsushi Okawa
BACKGROUND: There is no previous report that directly compared wear resistance of second-generation annealed highly cross-linked polyethylene with that of first-generation remelted highly cross-linked polyethylene. We therefore performed a retrospective study at a minimum of 5-year follow-up comparing second-generation annealed and first-generation remelted highly cross-linked polyethylene in order to: (1) assess wear rates and (2) compare the incidence of osteolysis between, (3) identify the frequency of complication related to the two types of highly cross-linked polyethylene...
March 11, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28292260/ruminant-specific-multiple-duplication-events-of-prdm9-before-speciation
#8
Abinash Padhi, Botong Shen, Jicai Jiang, Yang Zhou, George E Liu, Li Ma
BACKGROUND: Understanding the genetic and evolutionary mechanisms of speciation genes in sexually reproducing organisms would provide important insights into mammalian reproduction and fitness. PRDM9, a widely known speciation gene, has recently gained attention for its important role in meiotic recombination and hybrid incompatibility. Despite the fact that PRDM9 is a key regulator of recombination and plays a dominant role in hybrid incompatibility, little is known about the underlying genetic and evolutionary mechanisms that generated multiple copies of PRDM9 in many metazoan lineages...
March 14, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28281635/aluminum-induced-dreierketten-chain-cross-links-increase-the-mechanical-properties-of-nanocrystalline-calcium-aluminosilicate-hydrate
#9
Guoqing Geng, Rupert J Myers, Jiaqi Li, Roya Maboudian, Carlo Carraro, David A Shapiro, Paulo J M Monteiro
The incorporation of Al and increased curing temperature promotes the crystallization and cross-linking of calcium (alumino)silicate hydrate (C-(A-)S-H), which is the primary binding phase in most contemporary concrete materials. However, the influence of Al-induced structural changes on the mechanical properties at atomistic scale is not well understood. Herein, synchrotron radiation-based high-pressure X-ray diffraction is used to quantify the influence of dreierketten chain cross-linking on the anisotropic mechanical behavior of C-(A-)S-H...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28277892/development-of-optimized-inhalable-gemcitabine-loaded-gelatin-nanocarriers-for-lung-cancer
#10
Susanne R Youngren-Ortiz, David B Hill, Peter R Hoffmann, Kenneth R Morris, Edward G Barrett, M Gregory Forest, Mahavir B Chougule
BACKGROUND: Aerosol delivery of chemotherapeutic nanocarriers represents a promising alternative for lung cancer therapy. This study optimized gemcitabine (Gem)-loaded gelatin nanocarriers (GNCs) cross-linked with genipin (Gem-GNCs) to evaluate their potential for nebulized lung cancer treatment. METHODS: Gem-GNCs were prepared by two-step desolvation and optimized through Taguchi design and characterized for physicochemical properties. Particle size and morphology were confirmed by scanning and transmission electron microscopy...
March 9, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28274549/protease-inhibitor-associated-bone-mineral-density-loss-is-related-to-hypothyroidism-and-related-bone-turnover-acceleration
#11
Ei Kinai, Hiroyuki Gatanaga, Daisuke Mizushima, Takeshi Nishijima, Takahiro Aoki, Ikumi Genka, Katsuji Teruya, Kunihisa Tsukada, Yoshimi Kikuchi, Shinichi Oka
BACKGROUND: Clinical and experiments evidence indicate that protease inhibitors (PI) can cause bone mineral density (BMD) loss. However, the mechanism of such loss remains obscure. METHODS: This single-center, cross-sectional study included 184 HIV-infected patients treated with PI who underwent dual-energy X-ray absorptiometry scan. Serum phosphorus, percentage of tubular reabsorption of phosphate (%TRP), thyroid and parathyroid function (iPTH), vitamin D, osteocalcin (OC), urinary deoxypyridinoline (DPD), and urinary cross-linked N-telopeptide of type I collagen (u-NTx) were measured...
March 5, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28271692/colorimetric-detection-of-23-human-papillomavirus-genotypes-by-loop-mediated-isothermal-amplification
#12
Junxiao Lin, Biao Ma, Jiehong Fang, Ye Wang, Haizhen He, Wei Lin, Wei Su, Mingzhou Zhang
BACKGROUND: Human papillomavirus (HPV) infection is linked to cervical cancer. With the technological development of molecular biology and epidemiology, detection and treatment of HPV has become an important mean to prevent cervical cancer. METHODS: A simple, rapid, and sensitive colorimetric loop-mediated isothermal amplification (LAMP) method was established herein to detect 23 HPV genotypes. The sequences of the primers for the LAMP reaction were located in the L1 gene of the HPV genome...
March 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28267577/synthetic-toxic-a%C3%AE-1-42-oligomers-can-assemble-in-different-morphologies
#13
Claude Bobo, Stéphane Chaignepain, Sarah Henry, Hélène Vignaud, Alfred Améadan, Christelle Marchal, Enora Prado, James Doutch, Jean-Marie Schmitter, Corinne Nardin, Sophie Lecomte, Christophe Cullin
BACKGROUND: Alzheimer's disease is the most common neurodegenerative disease associated with aggregation of Aβ peptides. Aβ toxicity is mostly related to the capacity of intermediate oligomers to disrupt membrane integrity. We previously expressed Aβ1-42 in a eukaryotic cellular system and selected synthetic variants on their sole toxicity. The most toxic mutant G37C forms stable oligomers. METHODS: Different biophysical methods (Fluorescence spectroscopy, cross-linking, mass spectrometry (MS), Small Angle X-ray Scattering (SAXS), Atomic Force Microscopy (AFM), Transmission Electron Microscopy (TEM), calcein leakage) were used...
March 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28254281/polysulfone-hemodiafiltration-membranes-with-enhanced-anti-fouling-and-hemocompatibility-modified-by-poly-vinyl-pyrrolidone-via-in-situ-cross-linked-polymerization
#14
Lijing Zhu, Haiming Song, Jiarong Wang, Lixin Xue
Poly(vinyl pyrrolidone) (PVP) and its copolymers have been widely employed for the modification of hemodiafiltration membranes due to their excellent hydrophilicity, antifouling and hemocompatibility. However, challenges still remain to simplify the modification procedure and to improve the utilization efficiency. In this paper, antifouling and hemocompatibility polysulfone (PSf) hemodiafiltration membranes were fabricated via in situ cross-linked polymerization of vinyl pyrrolidone (VP) and vinyltriethoxysilane (VTEOS) in PSf solutions and non-solvent induced phase separation (NIPS) technique...
May 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28245561/negative-regulators-of-jak-stat-signaling-in-rheumatoid-arthritis-and-osteoarthritis
#15
REVIEW
Charles J Malemud
Elevated levels of pro-inflammatory cytokines are generally thought to be responsible for driving the progression of synovial joint inflammation in rheumatoid arthritis (RA) and osteoarthritis (OA). These cytokines activate several signal transduction pathways, including the Janus kinase/Signal Transducers and Activators of Transcription (JAK/STAT), Stress-Activated/Mitogen-Activated Protein Kinase (SAPK/MAPK) and phosphatidylinositol-3-kinase/Akt/mechanistic target of rapamycin (PI3K/Akt/mTOR) pathways which regulate numerous cellular responses...
February 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28242704/tolerance-to-structural-disorder-and-tunable-mechanical-behavior-in-self-assembled-superlattices-of-polymer-grafted-nanocrystals
#16
X Wendy Gu, Xingchen Ye, David M Koshy, Shraddha Vachhani, Peter Hosemann, A Paul Alivisatos
Large, freestanding membranes with remarkably high elastic modulus (>10 GPa) have been fabricated through the self-assembly of ligand-stabilized inorganic nanocrystals, even though these nanocrystals are connected only by soft organic ligands (e.g., dodecanethiol or DNA) that are not cross-linked or entangled. Recent developments in the synthesis of polymer-grafted nanocrystals have greatly expanded the library of accessible superlattice architectures, which allows superlattice mechanical behavior to be linked to specific structural features...
February 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28228782/safety-and-effectiveness-of-teriparatide-vs-alendronate-in-postmenopausal-osteoporosis-a-prospective-non-randomized-clinical-study
#17
Gianfilippo Caggiari, Paolo Tranquilli Leali, Giulia Raffaella Mosele, Leonardo Puddu, Francesca Badessi, Carlo Doria
In this work we study the safety and effectiveness of teriparatide and alendronate in patients with postmenopausal osteoporosis at high risk of fracture; it was a double-blinded and it was done by examining the comparisons between teriparatide 20 μg/day and alendronate 10 mg/day. Safety and effectiveness analyses were based on data from 355 woman with a mean age of 68 years. Two groups (A and B) with T-score ≤-2.5 at bone mineral density were analyzed and 3 or more vertebral fractures on radiograph. Group A: was treated with teriparatide 20 μg/day and composed from 182 women, in post-menopausal age, without a history of cancer...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28222201/linkage-and-mapping-of-quantitative-trait-loci-associated-with-angular-leaf-spot-and-powdery-mildew-resistance-in-common-beans
#18
Denis Bassi, Boris Briñez, Juliana Santa Rosa, Paula Rodrigues Oblessuc, Caléo Panhoca de Almeida, Stella Maris Nucci, Larissa Chariel Domingos da Silva, Alisson Fernando Chiorato, Rosana Pereira Vianello, Luis Eduardo Aranha Camargo, Matthew Wohlgemuth Blair, Luciana Lasry Benchimol-Reis
Angular leaf spot (ALS) and powdery mildew (PWM) are two important fungi diseases causing significant yield losses in common beans. In this study, a new genetic linkage map was constructed using single sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs), in a segregating population derived from the AND 277 x SEA 5 cross, with 105 recombinant inbred lines. Phenotypic evaluations were performed in the greenhouse to identify quantitative trait loci (QTLs) associated with resistance by means of the composite interval mapping analysis...
February 20, 2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28220551/association-between-sleep-duration-fat-mass-lean-mass-and-obesity-in-korean-adults-the-fourth-and-fifth-korea-national-health-and-nutrition-examination-surveys
#19
Kyuwoong Kim, Doosup Shin, Go-Un Jung, Donghoon Lee, Sang Min Park
This study investigated the association between sleep duration, fat mass, lean mass and obesity. Participants of this cross-sectional study were 16 905 adults included into the 4th and 5th Korea National Health and Nutrition Examination Surveys. Sleep duration was assessed by self-reported survey and categorized into ≤ 5, 6, 7, 8 and ≥ 9 h per day. The group reporting 7 h of sleep per day (comprised of those sleeping 7-8 h per day) was used as the reference group. Body composition was measured by dual X-ray absorptiometry (DEXA)...
February 21, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28217867/effects-of-25-hydroxyvitamin-d-and-vitamin-d-binding-protein-on-bone-mineral-density-and-disease-activity-in-malaysian-patients-with-rheumatoid-arthritis
#20
Tze Hao Wong, Esha Das Gupta, Ammu K Radhakrishnan, Suk Chyn Gun, Gandhi Chembalingam, Swan Sim Yeap
AIM: Vitamin D3 [25(OH)D] has been shown to be important in bone health and can influence rheumatoid arthritis (RA) disease activity. Vitamin D-binding protein (VDBP) levels vary with race and may modulate 'bioavailable' levels of 25(OH)D. The aim of this study was to explore the relationships between 25(OH)D, VDBP and clinical factors on bone mineral density (BMD) in a group of multi-ethnic Malaysian RA patients and healthy controls. METHODS: A cross-sectional study of 77 female RA patients and 29 controls was performed...
February 20, 2017: International Journal of Rheumatic Diseases
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