Aim: Globally, neurodegeneration accounts for significant morbidity and mortality among the elderly. Millions of people are afflicted with neurodegenerative diseases, with the most notable cases attributed to Alzheimer’s, Huntington’s, amyotrophic lateral sclerosis and Parkinson’s diseases. Sensitive assays that can detect proteopathic anomalies indicative of early neurodegeneration have remained elusive. Therefore, there is an urgent need […]
Aim: A UPLC–MS/MS method was developed to determine LBPT as well as its four metabolites in human plasma to support the clinical study aiming to evaluate the efficacy of LBPT tablet in patients undergoing hip/knee replacement. Methodology: Plasma samples were prepared by protein precipitation and then separated on a C18 analytical column using (A) acetonitrile
Aim: Certain rare inborn errors of metabolism clinically present with intractable seizures that readily respond to vitamin therapy. If identified early, brain damage due to seizures can be prevented. Methodology: A LC–MS method was developed and validated for the simultaneous quantification of the biomarkers in selected vitamin responsive pediatric seizures from dried blood spots. Results:
Aim: Dried blood spots (DBS) are used for the analysis of more than 2000 biomarkers. We assessed a range of analyte concentrations and diameters of DBS. Materials & methods: DBS samples were created by the application of increasing volumes of whole blood prepared by the UK NEQAS Quality Assurance Laboratory. Samples were analyzed in four
Aim: Human 14C radiotracer studies provide information-rich data sets that enable informed decision making in clinical drug development. These studies are supported by liquid scintillation counting after conventional-sized 14C doses (50–200 μCi) or complex accelerator mass spectrometry (AMS) after microtracer-sized doses (∼0.1–1 μCi). Mid-infrared laser-based ‘cavity ring-down spectroscopy’ (CRDS) is an emerging platform for the
Aim: To develop a sensitive HPLC method for the quantitation of sunitinib (SU) and its active metabolite N-desethyl-sunitinib (SU12662) in human plasma. Materials & methods: The analytes were extracted from 500 μl of plasma using liquid–liquid extraction followed by protein precipitation. Chromatographic separation of two analytes and internal standard, vandetenib, was achieved on a hydrophilic
This article summarizes the highlights from the 7th China Bioanalysis Forum (CBF) Annual Conference in June 2019. The annual CBF conference provided a great platform for the Chinese bioanalytical community to discuss the current bioanalytical regulations, share challenges and experiences. With rapid growth of the pharma industry in China in the past decade and advancement
COVID-19 led to changes in the way blood samples are collected. As societies were isolated to control viral spread, access to facilities became limited. Remote sample collection with a volumetric microsampling approach, using Mitra® devices based on VAMS® technology, proved to be highly effective. It allowed people to collect high-quality samples at home and post
Coronaviruses (CoVs) are a class of viruses that cause respiratory tract infections in birds and mammals. Severe acute respiratory syndrome and Middle East respiratory syndrome are pathogenic human viruses. The ongoing coronavirus causing a pandemic of COVID-19 is a recently identified virus from this group. The first step in the control of spreading the disease
Aim: In response to the COVID-19 pandemic, Regeneron developed the anti-SARS-CoV-2 monoclonal antibody cocktail, REGEN-COV® (RONAPREVE® outside the USA). Drug concentration data was important for determination of dose, so a two-part bioanalytical strategy was implemented to ensure the therapy was rapidly available for use. Results & methodology: Initially, a liquid chromatography-multiple reaction monitoring-mass spectrometry (LC-MRM-MS)