Results 41 to 50 of about 51,438 (262)

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

FEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile, Riccardo Diamanti, Daniel Lundin, Soni Sharma, Robin Lissner, Coenraad P. Kuil, Martin Högbom, Dirk Bald, Dan Sjöstrand   +8 more
wiley   +1 more source

Insights Into Responses to Caloric and Head Impulse Stimulation in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo [PDF]

Clinical and Experimental Otorhinolaryngology
Objectives. The aim of this study was to investigate the pathophysiology of persistent geotropic direction-changing positional nystagmus (pGeo DCPN) by analyzing caloric responses and the clinical course in patients with pGeo DCPN and other variants of ...
Seong Hoon Bae, Sang Hyun Kwak, Jeon Mi Lee, Ji Hyuk Han, Dae Bo Shim, Sung Huhn Kim   +5 more
doaj   +1 more source

Dimethyl fumarate combined with cisplatin at subcytotoxic doses sensitizes cervical cancer toward ferroptosis and apoptosis through GSH restriction and p53 (re)activation

Molecular Oncology, EarlyView.
Dimethyl fumarate (DMF) reduces growth of HPV‐positive cervical cancer spheroids and induces ferroptosis in cervical cancer cells via blocking SLC7A11/Glutathione (GSH) axis. Combination of subcytotoxic doses of DMF and cisplatin (CDDP) further suppresses spheroid growth and drives cell death in 2D culture models.
Carolina Punziano, Giuseppina Minopoli, Simona Romano, Laura Marrone, Katia Aquilano, Maria Lina Tornesello, Raffaella Faraonio   +6 more
wiley   +1 more source

Clinical characteristics of patients with dizziness/vertigo showing a dissociation between caloric and video head impulse test results

Ear, Nose & Throat Journal
Objective To explore the clinical characteristics of patients with dizziness/vertigo who showed a dissociation between the results of the caloric test and video head impulse test (vHIT). Methods A total of 327 patients who complained of dizziness/vertigo
Xiang Li MD, Xia Ling PhD, Zheyuan Li PhD, Ning Song MD, Xiahong Ba MD, Bo Yang MD, Xu Yang MD, Rubo Sui PhD   +7 more
doaj   +1 more source

A simple cold caloric test.

Nippon Jibiinkoka Gakkai Kaiho, 1984
1. 少量注水法による冷水刺激検査を客観的に評価するために,正常者10名に対し,1)20°C 5ml 10秒間注水20秒間刺激(少量注水法)2)20°C 20ml 10秒間注水,3)20°C 50ml 20秒間注水,4)簡易法による冷温交互試験(20ml 10秒間注水)を行った.1),2)は暗所開眼下およびフレンッェル眼鏡下,3),4)は暗所開眼下に観察し,眼振最大緩徐相速度,眼振持続時間を比較した.2. 眼振最大緩徐相速度は注水条件,観察条件により異なり,暗所の20°C 5ml 10秒間注水20秒間刺激が最も反応が強く(34.6度/秒),個体間の変動も小さかった.これに対し簡易法による冷温交互試験ではきわめて反応が弱く,温刺激では冷刺激の約2倍の反応が得られたが,8.4度/秒にすぎなかった ...
MIDORIKAWA, CHIKAKO, TAKAHASHI, MASAHIRO, TSUJITA, NAOMI, HOSHIKAWA, HARUKO   +3 more
openaire   +3 more sources

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Subjective Visual Vertical and Horizontal Abnormalities in a Patient with Lateral Medullary Syndrome-A Case Report [PDF]

Iranian Journal of Otorhinolaryngology, 2015
Introduction: Evaluation of persistent vertigo in post infarct patients is very important as the management depends on whether the cause is purely of central origin or due to associated vestibular affliction.
Amit Tyagi, Gaurav Ashish, Anjali Lepcha, Achamma Balraj   +3 more
doaj   +2 more sources

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

AMP-activated kinase and the endogenous endocannabinoid system might contribute to antinociceptive effects of prolonged moderate caloric restriction in mice

Molecular Pain, 2017
Background Caloric restriction is associated with broad therapeutic potential in various diseases and an increase in health and life span. In this study, we assessed the impact of caloric restriction on acute and inflammatory nociception in mice, which ...
Tanya S King-Himmelreich, Christine V Möser, Miriam C Wolters, Julia Schmetzer, Moritz Möller, Yannik Schreiber, Nerea Ferreirós, Gerd Geisslinger, Ellen Niederberger   +8 more
doaj   +1 more source