ArticleCurrent drug metabolism2021
Identification and Quantification of MIDD0301 Metabolites.
Article in Current drug metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed, 2 citations in OpenAlex.
- Design, Synthesis, and Biological Evaluation of Novel Spiro Imidazobenzodiazepines to Identify Improved Inhaled Bronchodilators.Journal of medicinal chemistry · 2023Article
- Comparative pharmacodynamic and pharmacokinetic study of MIDD0301 and its (S) enantiomer.Drug development research · 2022Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundMIDD0301 is an oral asthma drug candidate that binds GABAA receptors on airway smooth muscle and immune cells.
objectiveThe objective of this study is to identify and quantify MIDD0301 metabolites in vitro and in vivo and determine the pharmacokinetics of oral, IP, and IV administered MIDD0301.
methodsIn vitro conversion of MIDD0301 was performed using liver and kidney microsomes/S9 fractions followed by quantification using liquid chromatography-tandem mass spectrometry (LC-MS/MS). A LC-MS/MS method was developed using synthesized standards to quantify MIDD0301 and its metabolites in urine and feces. Blood, lung, and brain were harvested from animals that received MIDD0301 by oral, IP, and IV administration, followed by LCMS/ MS quantification. Imaging mass spectrometry was used to demonstrate the presence of MIDD0301 in the lung after oral administration.
resultsMIDD0301 is stable in the presence of liver and kidney microsomes and S9 fractions for at least two hours. MIDD0301 undergoes conversion to the corresponding glucuronide and glucoside in the presence of conjugating cofactors. For IP and IV administration, unconjugated MIDD0301 together with significant amounts of MIDD0301 glucoside and MIDD0301 taurine were found in urine and feces. Less conjugation was observed following oral administration, with MIDD0301 glucuronide being the main metabolite. Pharmacokinetic quantification of MIDD0301 in blood, lung, and brain showed very low levels of MIDD0301 in the brain after oral, IV, or IP administration. The drug half-life in these tissues ranged between 4-6 hours for IP and oral and 1-2 hours for IV administration. Imaging mass spectrometry demonstrated that orally administered MIDD0301 distributes uniformly in the lung parenchyma.
conclusionMIDD0301 undergoes no phase I and moderate phase II metabolism.
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