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Tolerance Reduction

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https://www.readbyqxmd.com/read/28550436/short-periods-of-high-temperature-during-meiosis-prevent-normal-meiotic-progression-and-reduce-grain-number-in-hexaploid-wheat-triticum-aestivum-l
#1
Tracie Draeger, Graham Moore
Exposure of wheat to high temperatures during male meiosis prevents normal meiotic progression and reduces grain number. We define a temperature-sensitive period and link heat tolerance to chromosome 5D. This study assesses the effects of heat on meiotic progression and grain number in hexaploid wheat (Triticum aestivum L. var. Chinese Spring), defines a heat-sensitive stage and evaluates the role of chromosome 5D in heat tolerance. Plants were exposed to high temperatures (30 or 35 °C) in a controlled environment room for 20-h periods during meiosis and the premeiotic interphase just prior to meiosis...
May 26, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28549665/effects-of-supervised-exercise-and-dietary-nitrate-in-older-adults-with-controlled-hypertension-and-or-heart-failure-with-preserved-ejection-fraction
#2
Hossam A Shaltout, Joel Eggebeen, Anthony P Marsh, Peter H Brubaker, Paul J Laurienti, Jonathan H Burdette, Swati Basu, Ashley Morgan, Patricia C Dos Santos, James L Norris, Timothy M Morgan, Gary D Miller, W Jack Rejeski, Amret T Hawfield, Debra I Diz, J Thomas Becton, Daniel B Kim-Shapiro, Dalane W Kitzman
Aerobic exercise training is an effective therapy to improve peak aerobic power (peak VO2) in individuals with hypertension (HTN, AHA/ACC class A) and heart failure patients with preserved ejection fraction (HFpEF). High nitrate containing beetroot juice (BRJ) also improves sub-maximal endurance and decreases blood pressure in both HTN and HFpEF. We hypothesized that combining an aerobic exercise and dietary nitrate intervention would result in additive or even synergistic positive effects on exercise tolerance and blood pressure in HTN or HFpEF...
May 23, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28549430/reduction-of-the-serum-levels-of-a-specific-biomarker-of-cartilage-degradation-coll2-1-by-hyaluronic-acid-kartilage%C3%A2-cross-compared-to-placebo-in-painful-knee-osteoarthritis-patients-the-epikart-study-a-pilot-prospective-comparative-randomized-double-blind
#3
Yves Henrotin, Francis Berenbaum, Xavier Chevalier, Marc Marty, Pascal Richette, François Rannou
BACKGROUND: Viscosupplementation is a symptomatic treatment of the knee osteoarthritis based on the intra-articular injection of hyaluronic acid (IAHA). Although many studies have investigated its effect on symptoms, few clinical studies have focused on its effects on biologicals markers of cartilage metabolism. In this study, we assessed the effect of an intra-articular injection of a reticulated hyaluronic acid compound on the level of a specific biomarker of type II collagen degradation...
May 26, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28548921/repeatability-testing-of-a-new-hybrid-iii-6-year-old-atd-lower-extremity
#4
Laura C Boucher, Yeonsu Ryu, Yun-Seok Kang, John H Bolte
OBJECTIVE: Vehicle safety is improving, thus decreasing the number of life-threatening injuries and increasing the need for research in other areas of the body. The current child anthropomorphic test device (ATD) does not have the capabilities or instrumentation to measure many of the potential interactions between the lower extremity and the vehicle interior. A prototype Hybrid III 6-year-old ATD lower extremity (ATD-LE) was developed and contains a tibia load cell and a more biofidelic ankle...
May 29, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28548560/microalgal-oil-from-schizochytrium-sp-prevents-hfd-induced-abdominal-fat-accumulation-in-mice
#5
Jinhui Yu, Yong Ma, Jie Sun, Liyuan Ran, Youwei Li, Ning Wang, Tao Yu, Wenting Gao, Wenbin Jia, Rujiao Jiang, Meihua Guo, Yuping Bi, Yingjie Wu
OBJECTIVE: Dietary n-3 polyunsaturated fatty acids (PUFAs), especially eicosapentaenoic acids (EPA) and docosahexaenoic acid (DHA), are proved to be effective in obesity reduction. Microalgal oil (MO) is an important alternative source of n-3 PUFAs that effectively alleviates obesity. The aim of the present study was to explore the anti-obesity effects of microalgal oil from Schizochytrium sp. (SMO) and to compare the effects of 2 SMOs (SMO1 and SMO2) with different levels of purity of n-3 PUFAs on high fat diet (HFD)-induced obesity in male C57BL/6J mice...
May 26, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28548157/pd-0-catalysed-asymmetric-reductive-heck-type-cyclization-of-z-1-iodo-1-6-dienes-and-enantioselective-synthesis-of-quaternary-tetrahydropyridines
#6
Longlei Hou, Yuejie Yuan, Xiaofeng Tong
A Pd(0)/(S)-p-MeO-BnPHOX catalytic system has been established for the asymmetric reductive Heck reaction of (Z)-1-iodo-1,6-dienes, which affords quaternary tetrahydropyridines with good to excellent enantioselectivities. This reaction tolerates a wide range of substituted alkene moieties, including 1,1-disubstituted, 1,1,2-trisubstituted as well as 1,2-disubstituted alkenes.
May 26, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28547998/a-randomized-clinical-trial-evaluating-the-efficacy-and-safety-of-the-once-weekly-dipeptidyl-peptidase-4-inhibitor-omarigliptin-in-patients-with-type-2-diabetes-inadequately-controlled-on-metformin-monotherapy
#7
R Ravi Shankar, Silvio E Inzucchi, Victoria Scarabello, Ira Gantz, Keith D Kaufman, Eseng Lai, Paulette Ceesay, Shailaja Suryawanshi, Samuel S Engel
OBJECTIVE: To examine the efficacy and safety of the once-weekly (q.w.) dipeptidyl peptidase-4 inhibitor, omarigliptin, in patients with type 2 diabetes (T2DM) and inadequate glycemic control on metformin monotherapy. METHODS: In a randomized, double-blind trial, patients with T2DM on a stable dose of metformin monotherapy (≥1500 mg/day) with glycated hemoglobin (HbA1c) of 7.0% to 10.5% were randomized to omarigliptin 25 mg q.w. or matching placebo (N = 201 in both) for 24 weeks (primary timepoint) followed by an additional 80-week treatment period...
May 26, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28547661/targeting-sclerostin-in-postmenopausal-osteoporosis-focus-on-romosozumab-and-blosozumab
#8
Ian R Reid
Most current treatments for osteoporosis inhibit bone resorption and reduce total fracture numbers by about one-quarter. The identification of the osteocytic protein sclerostin as a potent regulator of bone turnover and bone density has led to the development of a new therapeutic class-agents that inhibit sclerostin activity, resulting in increased bone formation and reduced bone resorption. Romosozumab and blosozumab are monoclonal antibodies that bind to sclerostin, reducing its inhibition of Wnt signaling...
May 25, 2017: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/28546525/pazopanib-for-the-treatment-of-non-clear-cell-renal-cell-carcinoma-a-single-arm-open-label-multicenter-phase-ii-study
#9
Ki Sun Jung, Su Jin Lee, Se Hoon Park, Jae-Lyun Lee, Se-Hoon Lee, Jae Yun Lim, Jung Hun Kang, Suee Lee, Sun Young Rha, Kyung Hee Lee, Ho Young Kim, Ho Yeong Lim
Purpose: The optimal treatment strategy for patients with metastatic non-clear cell type renal cell carcinoma (nccRCC) remains unclear. Although several inhibitors of vascular endothelial growth factor have recently shown efficacy against nccRCC, the clinical benefit of pazopanib in nccRCC has not been analyzed. We therefore designed a single-arm, open-label, phase II study to determine the efficacy and safety of pazopanib in patients with nccRCC. Materials and Methods: Patients with locally advanced or metastatic nccRCC, except for collecting duct or sarcomatoid type, received 800mg/day of pazopanib daily until progression of disease or intolerable toxicity...
May 22, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28545865/induced-tolerance-in-situ-to-chronically-pah-exposed-ammonium-oxidizers
#10
J Fredrik Lindgren, Ida-Maja Hassellöv, Jenny Rattfelt Nyholm, Anders Östin, Ingela Dahllöf
Sediment was sampled in the vicinity of a long-term source of Polycyclic Aromatic Hydrocarbons (PAHs) to evaluate whether tolerance can be induced in situ. Total PAH concentrations as well as the bioavailable PAHs were measured, and for nine PAHs the pore water concentration could be calculated. An induced tolerance in the ammonium oxidizing community was detected at the site with highest PAH concentration and tolerance was strongest, although not significantly, correlated to bioavailable alkylated PAHs. In addition, the tolerant microbial community showed a significant lower baseline capability for nitrification with an on average 35% reduction compared to the other sites...
May 22, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28545727/postoperative-weight-bearing-and-patient-reported-outcomes-at-one-year-following-tibial-plateau-fractures
#11
Dominic Thewlis, Francois Fraysse, Stuart A Callary, Viju Daniel Verghese, Claire F Jones, David M Findlay, Gerald J Atkins, Mark Rickman, Lucian B Solomon
Tibial plateau fractures are complex and the current evidence for postoperative rehabilitation is weak, especially related to the recommended postoperative weight bearing. The primary aim of this study was to investigate if loading in the first 12 weeks of recovery is associated with patient reported outcome measures at 26 and 52 weeks postoperative. We hypothesized that there would be no association between loading and patient reported outcome measures. Seventeen patients, with a minimum of 52-week follow-up following fragment-specific open reduction and internal fixation for tibial plateau fracture, were selected for this retrospective analysis...
May 17, 2017: Injury
https://www.readbyqxmd.com/read/28545589/gastrointestinal-tolerance-of-low-fodmap-oral-nutrition-supplements-in-healthy-human-subjects-a-randomized-controlled-trial
#12
Jennifer Erickson, Renee Korczak, Qi Wang, Joanne Slavin
BACKGROUND: There has been increasing interest in utilizing a diet low in fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAPs) for the treatment of irritable bowel syndrome (IBS), a functional gastrointestinal disease. While studies have indicated that this diet can be effective at symptom reduction, it is a restrictive diet and patients may find it challenging to find low FODMAP products to meet their nutrient needs. The primary objective of this study was to assess the gastrointestinal (GI) tolerance of three low FODMAP oral nutrition supplements (ONS) in healthy adults...
May 25, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28545019/circulating-soluble-programmed-death-1-levels-may-differentiate-immune-tolerant-phase-from-other-phases-and-hepatocellular-carcinoma-from-other-clinical-diseases-in-chronic-hepatitis-b-virus-infection
#13
Na Li, Zhihua Zhou, Fang Li, Jiao Sang, Qunying Han, Yi Lv, Wenxuan Zhao, Chunyan Li, Zhengwen Liu
Programmed death-1 (PD-1) is involved in the immune dysfunction of hepatitis B virus (HBV) infection and hepatocellular carcinoma (HCC). This study analyzed the association of circulating soluble PD-1 (sPD-1) levels with the phases and clinical diseases in chronic HBV infection. Serum sPD-1 levels were determined by enzyme linked immunosorbent assay in patients with different phases and liver diseases of chronic HBV infection. The sPD-1 levels in patients with chronic HBV infection were significantly elevated compared with HBV infection resolvers or healthy controls...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28544589/methionine-tumor-starvation-by-erythrocyte-encapsulated-methionine-gamma-lyase-activity-controlled-with-per-os-vitamin-b6
#14
Fabien Gay, Karine Aguera, Karine Sénéchal, Angie Tainturier, Willy Berlier, Delphine Maucort-Boulch, Jérôme Honnorat, Françoise Horand, Yann Godfrin, Vanessa Bourgeaux
Erymet is a new therapy resulting from the encapsulation of a methionine gamma-lyase (MGL; EC number 4.4.1.11) in red blood cells (RBC). The aim of this study was to evaluate erymet potential efficacy in methionine (Met)-dependent cancers. We produced a highly purified MGL using a cGMP process, determined the pharmacokinetics/pharmacodynamics (PK/PD) properties of erymet in mice, and assessed its efficacy on tumor growth prevention. Cytotoxicity of purified MGL was tested in six cancer cell lines. CD1 mice were injected with single erymet product supplemented or not with vitamin B6 vitamer pyridoxine (PN; a precursor of PLP cofactor)...
May 23, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28544233/bcl6-overexpression-alters-gene-expression-profile-in-a-myeloma-cell-line-and-is-associated-with-decreased-dna-damage-response
#15
Kenichi Tahara, Makiko Takizawa, Arito Yamane, Yohei Osaki, Takuma Ishizaki, Takeki Mitsui, Akihiko Yokohama, Takayuki Saitoh, Norifumi Tsukamoto, Morio Matsumoto, Hirokazu Murakami, Yoshihisa Nojima, Hiroshi Handa
BCL6 attenuates DNA damage response (DDR) through gene repression and facilitates tolerance to genomic instability during immunoglobulin affinity maturation in germinal center (GC) B cells. Although BCL6 expression is repressed through normal differentiation of GC B cells into plasma cells, a recent study showed the ectopic expression of BCL6 in primary multiple myeloma (MM) cells. However, the functional roles of BCL6 in MM cells are largely unknown. Here, we report that overexpression of BCL6 in a MM cell line, KMS12PE, induced transcriptional repression of ataxia telangiectasia mutated (ATM), a DDR signaling kinase, which was associated with a reduction in γH2AX formation after DNA damage...
May 23, 2017: Cancer Science
https://www.readbyqxmd.com/read/28544219/mechanism-based-enantiodivergence-in-manganese-reduction-catalysis-a-chiral-pincer-complex-for-the-highly-enantioselective-hydroboration-of-ketones
#16
Lutz Gade, Hubert Wadepohl, Vladislav Vasilenko, Clemens K Blasius
A manganese alkyl complex containing a chiral "boxmi" pincer ligand is a precatalyst for a catalyst of unprecedented activity and selectivity in the enantioselective hydroboration of ketones producing preparatively useful chiral alcohols in excellent yields and up to >99 %ee. It is applicable for both aryl alkyl and dialkyl ketone reduction under mild conditions (TOF >450 h-1 at -40°C) and an earth abundant base metal catalyst which operates at very low catalyst loadings (as low as 0.1 mol%) and with a high level of functional group tolerance...
May 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28543370/overexpression-of-the-rubisco-activase-gene-improves-growth-and-low-temperature-and-weak-light-tolerance-in-cucumis-sativus-l
#17
Huangai Bi, Peipei Liu, Zhensheng Jiang, Xizhen Ai
Rubisco activase (RCA) is an important enzyme that can catalyze the carboxylation and oxygenation activities of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), which is involved in the photosynthetic carbon reduction cycle. Here, we studied the effects of changes in RCA activity on photosynthesis, growth and development, as well as the chilling tolerance of RCA overexpressing transgenic cucumber (Cucumis sativus) plants. CsRCA overexpression increased the plant height, leaf area and dry matter, and decreased the root/top ratio in transgenic cucumber plants compared with the wild type (WT) plants...
May 22, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28542832/integrated-transcriptomic-and-metabolomic-analysis-reveals-adaptive-changes-of-hibernating-retinas
#18
Yizhao Luan, Jingxing Ou, Vincent P Kunze, Fengyu Qiao, Yan Wang, Lai Wei, Wei Li, Zhi Xie
Hibernation is a seasonally adaptive strategy that allows hibernators to live through extremely cold conditions. Despite the profound reduction of blood flow to the retinas, hibernation causes no lasting retinal injury. Instead, hibernators show an increased tolerance to ischemic insults during the hibernation period. To understand the molecular changes of the retinas in response to hibernation, we applied an integrative transcriptome and metabolome analysis to explore changes in gene expression and metabolites of 13-lined ground squirrel retinas during hibernation...
May 25, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28542574/combination-therapy-of-cancer-with-cancer-vaccine-and-immune-checkpoint-inhibitors-a-mathematical-model
#19
Xiulan Lai, Avner Friedman
In this paper we consider a combination therapy of cancer. One drug is a vaccine which activates dendritic cells so that they induce more T cells to infiltrate the tumor. The other drug is a checkpoint inhibitor, which enables the T cells to remain active against the cancer cells. The two drugs are positively correlated in the sense that an increase in the amount of each drug results in a reduction in the tumor volume. We consider the question whether a treatment with combination of the two drugs at certain levels is preferable to a treatment by one of the drugs alone at 'roughly' twice the dosage level; if that is the case, then we say that there is a positive 'synergy' for this combination of dosages...
2017: PloS One
https://www.readbyqxmd.com/read/28542139/regulator-of-g-protein-signaling-2-is-a-key-regulator-of-pancreatic-%C3%AE-cell-mass-and-function
#20
H Dong, Y Zhang, J Wang, D S Kim, H Wu, B Sjögren, W Gao, L Luttrell, H Wang
Pancreatic β-cell death and dysfunction contributes to the pathogenesis of both type 1 and type 2 diabetes. We aimed to examine whether the regulator of G protein signaling protein 2 (RGS2), a multifunctional inhibitor of G protein-coupled receptor (GPCR) signaling, impacts β-cell death and function. Metabolic phenotypes, β-cell secretory function, and glucose and insulin tolerance were measured in RGS2 knockout (RGS2(-/-)) mice and their wild-type (RGS2(+/+)) littermate controls. β-Cell death was evaluated in RGS2-knockdown and -overexpressing β cells and RGS2(-/-) islets by flow cytometry, western blot, ELISA, TUNEL staining, and apoptosis RT(2) profiler PCR array analysis...
May 25, 2017: Cell Death & Disease
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