Results 121 to 130 of about 17,886 (241)

High-Throughput Screening of Drugs of Abuse in Urine by Supported Liquid-Liquid Extraction and UHPLC Coupled to Tandem MS [PDF]

, 2018
A qualitative method, involving supported liquid-liquid extraction (SLE) and ultra high pressure liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS-MS), was developed for the rapid tentative identification of various drugs of abuse in ...
Guillarme, Davy, Maquille, Aubert, Rudaz, Serge, Veuthey, Jean-Luc   +3 more
core  

PIK3CA Mutations Downregulate PPT1 to Promote Adipogenesis by Suppressing P300 Depalmitoylation and Phase Separation

Advanced Science, EarlyView.
This study demonstrates that somatic PIK3CA mutations suppress PPT1 expression via activation of the PI3K–AKT–c‐JUN axis. This reduction in PPT1 weakens its interaction with P300, thereby increasing palmitoylation at C1176 of P300 and protecting P300 from lysosomal degradation.
Hongrui Chen, Zening Huang, Rui Chang, Wei Gao, Yajing Qiu, Bin Sun, Chen Hua, Xiaoxi Lin   +7 more
wiley   +1 more source

NIR‐II Imaging‐Guided Photothermal Activation of a TRPV4‐Targeted Nanoplatform Delivering Cycloastragenol to Promote Microglia Reprogramming and α‐Synuclein Clearance in Parkinson's Disease

Advanced Science, EarlyView.
ABSTRACT Current therapies for Parkinson's disease (PD) fail to concurrently address α‐synuclein (α‐syn) aggregation and microglia‐mediated neuroinflammation. Herein, we engineer a near‐infrared‐II (NIR‐II) phototheranostic nanoplatform, CAG/FD1080@MM‐aTRPV4, for synergistic regulation of microglial function and real‐time monitoring of PD pathology. We
Hsuan Lo, Linjuan Feng, Shiying Li, Lik Hang Hugo Tse, Xuehan Wang, Xingyang Zhao, Shaoheng Ma, Xin Li, Yanjuan Gu, Wing‐Tak Wong   +9 more
wiley   +1 more source

Redefining UHPLC & UHPLC/MS [PDF]

Chemical & Engineering News Archive, 2014
openaire   +3 more sources

Lactylation Reprogramming in the Bone Infection Microenvironment Identifies PGK1 K361 as a Potential Therapeutic Target for Osteogenic Dysfunction

Advanced Science, EarlyView.
Staphylococcus aureus (S. aureus) infection creates a high‐lactate microenvironment, promoting p300‐mediated lactylation of PGK1 at lysine 361 (K361). Lactylated PGK1 translocates to the mitochondrial outer membrane and interacts with VDAC3. This interaction triggers FtMt downregulation, iron accumulation, and excessive PINK1/Parkin‐mediated mitophagy,
Han‐jun Qin, Si‐ying He, Ting‐hui Xiao, Da‐mao Dai, Xin‐jia Hu, Nan Jiang   +5 more
wiley   +1 more source

Towards Precision Medicine in Clinical Practice: Alinity C vs. UHPLC-MS/MS in Plasma Aripiprazole Determination

Pharmaceutics
Therapeutic drug monitoring improves the benefit–risk balance of antipsychotic therapy. Ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS) is considered the gold-standard method for measuring plasma drug concentrations ...
Francisco José Toja-Camba, Enrique Bandín-Vilar, Gonzalo Hermelo-Vidal, Carolina Feitosa-Medeiros, Antonio Cañizo-Outeiriño, Ana Castro-Balado, Iria Varela-Rey, Irene Zarra-Ferro, Anxo Fernández-Ferreiro, Cristina Mondelo-García   +9 more
doaj   +1 more source

Inosine‐Triphosphate‐Pyrophosphatase Activity as a Potential Predictor of Methotrexate Remission in Juvenile Idiopathic Arthritis

Arthritis &Rheumatology, EarlyView.
Objective Methotrexate (MTX) is the first‐line therapy for juvenile idiopathic arthritis (JIA), but up to 40% of patients do not respond to it. Low inosine triphosphate pyrophosphatase (ITPA) activity has been associated with reduced clinical remission. We investigated the role and underlying mechanisms of ITPA in vitro. Methods ITPA enzymatic activity
Sofia Sindici Forgiarini, Marianna Lucafò, Debora Curci, Davide Selvestrel, Valentina Moressa, Sofia Pagarin, Barbara Bellich, Martina Franzin, Alberto Tommasini, Mara L. Becker, Laura B. Ramsey, Susan D. Thompson, Carl D. Langefeld, Federica Corba, Edoardo Marrani, Gabriele Simonini, Gabriele Stocco, Giuliana Decorti, Andrea Taddio, Serena Pastore   +19 more
wiley   +1 more source

Safety, tolerability and pharmacokinetics of DNDI‐6148, a novel agent for leishmaniasis: A randomized, controlled, single ascending dose study in healthy participants

British Journal of Clinical Pharmacology, EarlyView.
Aim The benzoxaborole derivative DNDI‐6148 is an antiparasitic agent with activity against multiple Leishmania protozoan species, including L. infantum and L. donovani, which cause visceral leishmaniasis. We investigated the safety, tolerability and pharmacokinetics of single oral doses of DNDI‐6148 in a randomized, parallel‐group, placebo‐controlled ...
Jean‐Yves Gillon, Sophie Delhomme, Delphine Launay, Séverine Blesson, Stéphanie Braillard, Pegah Maghdooni, Frauke Assmus, Richard Hoglund, Joel Tarning, Sabrina Loyau, Byron Arana, Mathilde Latreille‐Barbier, Yves Donazzolo   +12 more
wiley   +1 more source

Approaches for optimizing biomarker profiling using liquid chromatography tandem mass spectrometry [PDF]

, 2017
Due to its selectivity and versatility, liquid chromatography tandem mass spectrometry (LC MS/MS) is a key technology in the analysis of complex biomarker panels.
Suhr, Anna Catharina
core  

Understanding the influence of transfusion and blood loss on tranexamic acid concentration in scoliosis surgery with blood loss

British Journal of Clinical Pharmacology, EarlyView.
Aims Tranexamic acid (TXA) stabilizes clot formation by inhibiting fibrin degradation and improves postoperative outcomes. However, rare adverse events (e.g., thrombosis, seizures) warrant dose–risk evaluation. This study examines how perioperative blood loss and transfusion practices affect TXA concentrations during paediatric scoliosis surgery ...
Paula Alexandra Sá, Luisa Barreiros, Marcela A. Segundo, Eugénia Cruz, Sibylle Langenecker   +4 more
wiley   +1 more source