UPLC-MS/MSに基づいたプニカラギンの肝腸ファーストパス効果と分泌経路の体系的な研究
Zixin Chen1, Zhanying Chang1, Pengxia Yao1
1College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China.
Molecules (Basel, Switzerland)
|February 13, 2026
まとめ
石榴のプニカラギンは,肝臓の処理ではなく,広範な腸内代謝による口腔での生物利用性が低い. この研究は,その腸内処理と除去を明確にし,将来の配送戦略を支援します.
科学分野:
- 薬理学 薬理学とは
- 薬物の代謝について
- 自然製品 化学 化学
背景:
- ポニカラジン (Punicalagin) は,オレンジの重要なポリフェノールであり,重要な生物活性を示しているが,口腔からの吸収は低い.
- プニカラギンの経口生物利用性が低い主な原因 (肝臓対腸内ファーストパス代謝) はよくわかっていません.
研究 の 目的:
- ネズミにおけるプニカラギンのファーストパス配分と除去を定量化するために.
- 肝臓または腸の代謝がプニカラギンの経口生物利用性を制限するかどうかを判断する.
主な方法:
- プニカラギン分析のための定量的なUPLC-MS/MS方法を開発しました.
- プニカラギンは,ネズミに静脈内,ポータル静脈,口腔および腸内経路で投与された.
- 排泄をプロファイルし,代謝物質を特定するために,血,尿,便のサンプルを分析した.
主要な成果:
- プニカラジンは,約3.49%の絶対的経口生物利用性を示しました.
- 腸内ファーストパス抽出はほぼ完全 (95.95%),肝臓抽出は控えめ (13.94%).
- 親プニカラギンとメタボリートは,主に糞便で排出された.
結論:
- 腸内ファーストパス代謝は,プニカラギンの経口生物利用性を制限する主な要因です.
- 排便が主たる排出は,広範な腸水解と微生物群媒介による変換を示唆しています.
- この発見は,プニカラギンの経口投与と全身的曝露を高めるための薬理学的な基礎を提供します.
キーワード:
UPLC-MS/MS/MSで表示される生物学的利用可能性排泄は,排泄によって起こります.ファーストパス効果です.腸内代謝による代謝である.ファルマコキネティクス 薬理学プニカラギン (プニカラギン) とはさらに関連する動画
09:58A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
Published on: May 10, 2018
10.1K
11:00Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS
Published on: May 20, 2013
23.4K
関連する概念動画
Hepatic Drug Excretion: Influencing Factors
609
The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
609
Hepatic Drug Excretion: Enterohepatic Cycling
2.9K
Enterohepatic cycling involves the active secretion of drugs and their metabolites into the bile via transporters in the canalicular membrane of hepatocytes. This secretion is an integral part of the digestive process, releasing these substances into the gastrointestinal (GI) tract.
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
2.9K
First Pass Effect
9.7K
Presystemic elimination, or the first-pass effect, is the metabolism of drugs that reduces their effective concentration at the site of action. Apart from the first-pass effect, the systemic bioavailability of the drug is also reduced by other factors, including incomplete absorption or chemical degradation of drugs.
Depending on the route of administration, drugs can be metabolized in the liver, intestine, lungs, and vasculature. Orally administered drugs are first absorbed through the...
Depending on the route of administration, drugs can be metabolized in the liver, intestine, lungs, and vasculature. Orally administered drugs are first absorbed through the...
9.7K
What Are Osmoregulation and Excretion?
38.2K
Organisms must keep bodily fluids at a constant temperature and pH while maintaining specific solute concentrations in order to support life functions. Osmoregulation is the process that balances solute and water levels.
38.2K
Anatomy of the Intestines
87.9K
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
87.9K
Random and Systematic Errors
15.3K
Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
15.3K
