keyword
MENU ▼
Read by QxMD icon Read
search

Activity tolerance

keyword
https://www.readbyqxmd.com/read/29046052/protective-effect-of-different-antioxidant-agents-in-uvb-irradiated-keratinocytes
#1
Sara Salucci, Sabrina Burattini, Francesca Buontempo, Alberto Maria Martelli, Elisabetta Falcieri, Michela Battistelli
Skin cells can respond to UVB-induced damage either by tolerating it, or restoring it through antioxidant activation and DNA repair mechanisms or, ultimately, undergoing programmed cell death, when damage is massive. Nutritional factors, in particular, food antioxidants, have attracted much interest because of their potential use in new preventive, protective, and therapeutic strategies for chronic degenerative diseases, including skin inflammation and cancer. Some polyphenols, present in virgin olive oil, well tolerated by organism after oral administration, show a variety of pharmacological and clinical benefits such as anti-oxidant, anti-cancer, anti-inflammatory, and neuro-protective activities...
September 18, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046031/-innate-lymphoid-cells-and-their-role-in-immune-response-regulation
#2
Bibiana Patricia Ruiz-Sánchez, David Cruz-Zárate, Iris Estrada-García, Isabel Wong-Baeza
Innate lymphoid cells (ILCs) are lymphocytes lacking antigen recognition receptors and become activated in response to cytokines and through microbe-associated molecular pattern (MAMP) receptors. ILCs are found mainly in mucosal tissues and participate in the immune response against infections and in chronic inflammatory conditions. ILCs are divided in ILC-1, ILC-2 and ILC-3, and these cells have analogue functions to those of immune adaptive response lymphocytes Th1, Th2 and Th17. ILC-1 express T-bet, produce IFNγ, protect against infections with intracellular microorganisms and are related to inflammatory bowel disease immunopathology...
July 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29045936/anti-diabetic-potential-of-the-leaves-of-anisomeles-malabarica-in-streptozotocin-induced-diabetic-rats
#3
Peddanna Kotha, Kameswara Rao Badri, Ramya Nagalapuram, Rajasekhar Allagadda, Appa Rao Chippada
BACKGROUND/AIMS: Diabetes mellitus is a pandemic metabolic disorder that is affecting a majority of populations in recent years. There is a requirement for new drugs that are safer and cheaper due to the side effects associated with the available medications. METHODS: We investigated the anti-diabetic activity of leaves of Anisomeles malabarica following bioactivity guided fractionation. The different solvent (hexane, ethyl acetate, methanol and water) extracts of A...
October 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29045637/effects-of-feeding-on-different-host-plants-and-diets-on-bradysia-odoriphaga-population-parameters-and-tolerance-to-heat-and-insecticides
#4
Guodong Zhu, Yin Luo, Ming Xue, Haipeng Zhao, Xia Sun, Xinhui Wang, John Trumble
Bradysia odoriphaga Yang et Zhang, the Chinese chive root maggot, is a devastating pest of agricultural plants causing significant losses in vegetable crops, edible mushrooms, and humus. To determine the effects of feeding on different host plants and diets on the life parameters of B. odoriphaga and its tolerance to stressful conditions, we analyzed the life-table data of B. odoriphaga reared on Chinese chive (Allium hookeri), Welsh onion (Allium fistulosum), garlic (Allium sativum), oyster mushroom (Pleurotus ostreatus), and humus and assayed its tolerance to heat and insecticides...
October 17, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29045576/activation-of-cannabinoid-receptor-1-is-involved-in-protection-against-mitochondrial-dysfunction-and-cerebral-ischaemic-tolerance-induced-by-isoflurane-preconditioning
#5
M Cai, Q Yang, G Li, S Sun, Y Chen, L Tian, H Dong
Background: Isoflurane preconditioning (IPC) induces cerebral ischaemic tolerance, but the mechanism remains poorly understood. The aim of this study was to determine changes in mitochondrial function in the brain after IPC, and whether the cannabinoid receptor 1 (CB1R) could be involved in the mechanism of mitochondrial protection mediated by IPC. Methods: Adult male Sprague-Dawley rats were pretreated with isoflurane 2% for 1 h day-1, for 5 days consecutively, and then subjected to 120 min right middle cerebral artery occlusion...
October 13, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29045540/phase-ii-trial-of-pembrolizumab-in-patients-with-platinum-refractory-germ-cell-tumors-a-hoosier-cancer-research-network-study-gu14-206
#6
N Adra, L H Einhorn, S K Althouse, N R Ammakkanavar, D Musapatika, C Albany, D Vaughn, N H Hanna
Background: Despite remarkable results with salvage standard-dose or high-dose chemotherapy about 15% of patients with relapsed germ-cell tumors (GCT) are incurable. Immune checkpoint inhibitors have produced significant remission in multiple tumor types. We report the first study of immunotherapy in patients with GCT. Patients and Methods: Single arm phase 2 trial investigating pembrolizumab 200mg IV Q3weeks until disease progression in patients with relapsed GCT and no curable options...
October 17, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045513/dpyd-genotype-guided-dose-individualization-to-improve-patient-safety-of-fluoropyrimidine-therapy-call-for-a-drug-label-update
#7
L M Henricks, F L Opdam, J H Beijnen, A Cats, J H M Schellens
The fluoropyrimidine anticancer drugs, especially 5-fluorouracil (5-FU) and capecitabine, are frequently prescribed for several types of cancer, including breast, colorectal, head and neck and gastric cancer. In the current drug labels of 5-FU and capecitabine in the European Union and the United States of America no adaptive dosing strategies are incorporated for polymorphic metabolism of 5-FU.Although treatment with fluoropyrimidines is generally well tolerated, a major clinical limitation is that a proportion of the treated population experiences severe, sometimes life-threatening, fluoropyrimidine-related toxicity...
August 2, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045498/novel-drug-targets-in-cell-wall-biosynthesis-exploited-by-gene-disruption-in-pseudomonas-aeruginosa
#8
Ayssar A Elamin, Susanne Steinicke, Wulf Oehlmann, Yvonne Braun, Hanaa Wanas, Eduard A Shuralev, Carmen Huck, Marko Maringer, Manfred Rohde, Mahavir Singh
For clinicians, Pseudomonas aeruginosa is a nightmare pathogen that is one of the top three causes of opportunistic human infections. Therapy of P. aeruginosa infections is complicated due to its natural high intrinsic resistance to antibiotics. Active efflux and decreased uptake of drugs due to cell wall/membrane permeability appear to be important issues in the acquired antibiotic tolerance mechanisms. Bacterial cell wall biosynthesis enzymes have been shown to be essential for pathogenicity of Gram-negative bacteria...
2017: PloS One
https://www.readbyqxmd.com/read/29044825/pattern-of-bleeding-in-a-large-prospective-cohort-of-haemophilia-a-patients-a-three-year-follow-up-of-the-ahead-advate-in-haemophilia-a-outcome-database-study
#9
K Khair, M G Mazzucconi, R Parra, E Santagostino, D A Tsakiris, C Hermans, J Oldenburg, G Spotts, K Steinitz-Trost, A Gringeri
INTRODUCTION: Outcome data on treatment of patients with haemophilia A spanning several years of real-world evidence collection are currently very limited. AIM AND METHODS: The global prospective long-term Advate(®) Haemophilia A Outcome Database (AHEAD) cohort study collects real-world data from patients with severe and moderate haemophilia. We report an interim data read-out after three years of observation. RESULTS: A total of 522 patients were enrolled from 21 countries: 334 completed year 1 follow-up, 238 completed year 2 and 136 completed year 3, with an overall follow-up of 811 patient-years...
October 17, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29044571/sensitivity-of-sorghum-pollen-and-pistil-to-high-temperature-stress
#10
M Djanaguiraman, R Perumal, S V K Jagadish, I A Ciampitti, R Welti, P V V Prasad
High temperature (HT) decreases seed-set percentage in sorghum [Sorghum bicolor (L.) Moench]. The relative sensitivity of pollen and particularly pistil and the mechanistic response that induces tolerance or susceptibility to HT is not well known and hence is the major objective of this research. The male sterile (ATx399) and fertile (RTx430) lines were exposed to 30/20 °C (optimum temperature; OT), 36/26 °C (HT1 ) and 39/29 °C (HT2 ) from the start of booting to seed-set in a controlled environment. Similarly, in the field, HT stress was imposed using heat tents...
October 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29044544/primary-systemic-therapy-in-resectable-pancreatic-ductal-adenocarcinoma-using-mfolfirinox-a-pilot-study
#11
Robert de W Marsh, Mark S Talamonti, Marshall S Baker, Mitchell Posner, Kevin Roggin, Jeffrey Matthews, Daniel Catenacci, Mark Kozloff, Blase Polite, Michele Britto, Chi Wang, Hedy Kindler
BACKGROUND AND OBJECTIVES: Surgery followed by gemcitabine and/or a fluoropyrimidine is standard therapy for resectable PDAC. mFOLFIRINOX (oxaliplatin 85 mg/m(2) , irinotecan 180 mg/m(2) , leucovorin 400 mg/m(2) Day 1, 5-FU 2400 mg/m(2)  × 48 h IV, peg-filgrastim 6 mg SQ day 3, every 14 days) has substantial activity in metastatic PDAC. We wished to determine the tolerability/efficacy of peri-operative mFOLFIRINOX in resectable PDAC. METHODS: Patients with resectable PDAC (ECOG PS 0/1) received four cycles of mFOLFIRINOX pre- and post-surgery...
October 16, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29044496/ncctg-n0879-alliance-a-randomized-phase-2-cooperative-group-trial-of-carboplatin-paclitaxel-and-bevacizumab%C3%A2-%C3%A2-%C3%A2-everolimus-for-metastatic-melanoma
#12
Robert R McWilliams, Jacob B Allred, Jessica A Slostad, Rajini Katipamula, Roxana S Dronca, Kandelaria M Rumilla, Lori A Erickson, Alan H Bryce, Richard W Joseph, Lisa A Kottschade, David M King, John M Leitch, Svetomir N Markovic
BACKGROUND: Despite the success of immune checkpoint and targeted therapy, many patients with melanoma ultimately require further treatment. The combination of carboplatin, paclitaxel, and bevacizumab (CPB) has demonstrated promising activity in a single-arm study. In the current study, the authors performed a randomized phase 2 study to confirm efficacy and to determine whether adding everolimus would increase the activity of the combination. METHODS: Through the North Central Cancer Treatment Group, a total of 149 patients with unresectable AJCC 6th edition stage IV melanoma were randomized from May 2010 to May 2014 to either CPB or CPB with everolimus (CPBE)...
October 17, 2017: Cancer
https://www.readbyqxmd.com/read/29044403/involvement-of-formate-dehydrogenases-in-stationary-phase-oxidative-stress-tolerance-in-escherichia-coli
#13
Yumi Iwadate, Noriyuki Funabasama, Jun-Ichi Kato
Previously, we constructed a series of reduced-genome strains of Escherichia coli by combining large-scale chromosome deletions and then tested the sensitivity of these strains to the redox-cycling drug menadione. In this study, we analyzed a deletion that increased menadione sensitivity and discovered that loss of selenocysteine synthase genes was responsible for the strain's reduced tolerance to oxidative stress. Mutants of formate dehydrogenases, which are selenocysteine-containing enzymes, were also sensitive to menadione, indicating that these enzymes are involved in oxidative stress during stationary phase, specifically under microaerobic conditions in the presence of glucose...
November 1, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29044097/dna-binding-of-the-tet-transactivator-curtails-antigen-induced-lymphocyte-activation-in-mice
#14
Eleonora Ottina, Victor Peperzak, Katia Schoeler, Emma Carrington, Roswitha Sgonc, Marc Pellegrini, Simon Preston, Marco J Herold, Andreas Strasser, Andreas Villunger
The Tet-On/Off system for conditional transgene expression constitutes state-of-the-art technology to study gene function by facilitating inducible expression in a timed and reversible manner. Several studies documented the suitability and versatility of this system to trace lymphocyte fate and to conditionally express oncogenes or silence tumour suppressor genes in vivo. Here, we show that expression of the tetracycline/doxycycline-controlled Tet-transactivator, while tolerated well during development and in immunologically unchallenged animals, impairs the expansion of antigen-stimulated T and B cells and thereby curtails adaptive immune responses in vivo...
October 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/29043807/2-3-dihydro-3%C3%AE-methoxy-withaferin-a-protects-normal-cells-against-stress-molecular-evidence-of-its-potent-cytoprotective-activity
#15
Anupama Chaudhary, Rajkumar S Kalra, Chuang Huang, Jay Prakash, Sunil C Kaul, Renu Wadhwa
2,3-Dihydro-3β-methoxy withaferin-A (3βmWi-A) is a natural withanolide that is structurally close to withaferin-A (Wi-A), is cytotoxic to human cancer cells, and is a candidate anticancer natural compound. Using cell-based biochemical, molecular, and imaging assays, we report that Wi-A and 3βmWi-A possess contrasting activities. Whereas Wi-A caused oxidative stress to normal cells, 3βmWi-A was well tolerated at even 10-fold higher concentrations. Furthermore, it promoted survival and protected normal cells against oxidative, UV radiation, and chemical stresses...
October 18, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29043393/characterization-of-a-set-of-abdominal-neuroendocrine-cells-that-regulate-stress-physiology-using-colocalized-diuretic-peptides-in-drosophila
#16
Meet Zandawala, Richard Marley, Shireen A Davies, Dick R Nässel
Multiple neuropeptides are known to regulate water and ion balance in Drosophila melanogaster. Several of these peptides also have other functions in physiology and behavior. Examples are corticotropin-releasing factor-like diuretic hormone (diuretic hormone 44; DH44) and leucokinin (LK), both of which induce fluid secretion by Malpighian tubules (MTs), but also regulate stress responses, feeding, circadian activity and other behaviors. Here, we investigated the functional relations between the LK and DH44 signaling systems...
October 17, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29043360/synthesis-photophysical-and-biological-properties-of-a-new-oxazolone-fluorescent-probe-for-bioimaging-an-experimental-and-theoretical-study
#17
Przemysław Krawczyk, Beata Jędrzejewska, Piotr Cysewski, Tomasz Janek
In this study, a new oxazolone derivative 4-{N,N-bis[2-phenyl-4-benzylidene-1,3-oxazol-5(4H)-one]amino}benzaldehyde (PB3) was synthesized and investigated as a fluorescent dye. The spectroscopic properties in different solvents were thoroughly studied. The experimental data were supported by quantum-chemical calculations using density functional theory. Measurements and theoretical calculations showed that the PB3 dye is characterized by non-monotonic solvatochromism, a strongly polar charge transfer excited state, a large Stokes' shift, a high fluorescence quantum yield and a high fluorescence lifetime...
October 18, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29042976/anti-obesity-effect-of-robusta-fermented-with-leuconostoc-mesenteroides-in-high-fat-diet-induced-obese-mice
#18
Soo-Young Choi, Seung-Hyun Ryu, Jin-Il Park, Eui-Suk Jeong, Jong-Hyung Park, Seung-Hoon Ham, Hee-Yeon Jeon, Jun-Young Kim, Inn-Goo Kyeong, Dong-Goo Kim, Ji-Young Shin, Yang-Kyu Choi
Robusta beans cultivated with Monascus ruber (RMR) were successively fermented with Leuconostoc mesenteroides (LM) and the antiobesity effects were examined. To produce an obese mouse model to investigate the hypolipidemic effects, ICR mice were fed the same high-fat diet for 6 weeks. Treatment groups were given 10 or 20% RMR-LM. Body weight changes in the 20% RMR-LM group were lower compared with those in the control group. Visceral adipose tissue weight and adipose size were significantly lower in the 20% RMR-LM group compared with those in the control group...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042612/novel-application-of-magnetic-protein-convenient-one-step-purification-and-immobilization-of-proteins
#19
Min Jiang, Lujia Zhang, Fengqing Wang, Jie Zhang, Guosong Liu, Bei Gao, Dongzhi Wei
Recently, a magnetic protein was discovered, and a multimeric magnetosensing complex was validated, which may form the basis of magnetoreception. In this study, the magnetic protein was firstly used in biotechnology application, and a novel convenient one-step purification and immobilization method was established. A universal vector and three linker patterns were developed for fusion expression of magnetic protein and target protein. The magnetic protein was absorbed by iron beads, followed by target protein aggregation, purification, and immobilization...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042590/effects-of-short-term-heat-shock-and-physiological-responses-to-heat-stress-in-two-bradysia-adults-bradysia-odoriphaga-and-bradysia-difformis
#20
Guodong Zhu, Ming Xue, Yin Luo, Guixia Ji, Fang Liu, Haipeng Zhao, Xia Sun
Bradysia odoriphaga and Bradysia difformis are devastating pests of vegetable, ornamental crops and edible mushrooms causing significant losses. Temperature may be an important factor restricting their population abundance in the summer. To determine the effects of short-term heat shock on adults, their survival, longevity and fecundity data were collected, and antioxidant responses and heat shock protein expression levels were examined. Our results indicated that the survival rates of Bradysia adults decreased rapidly after heat shock ≥36 °C, and the longevity and reproductive capacities were significantly inhibited, indicating that short-term heat shock had lethal and sub-lethal effects...
October 17, 2017: Scientific Reports
keyword
keyword
114207
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"