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Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow

Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow

Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug...

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Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...

Hepatic Portal System

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In the liver and bile canaliculi, influx and efflux transporters modification can influence intrinsic clearance. Transporters play a significant role in moving drugs within liver cells. Elaborate models, such as the Biopharmaceutical Classification System (BCS), are essential to relate transporters to drug disposition. This system categorizes drugs into four classes based on solubility and permeability, providing insights into elimination routes and the effects of transporters following oral...

Hepatic Drug Excretion: Enterohepatic Cycling

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Endoscopic Approach for Colloid Cyst Resection

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Published on: May 23, 2025

Ciliated hepatic foregut cyst.

D A Wheeler, H A Edmondson

The American Journal of Surgical Pathology

|June 1, 1984

Summary

This summary is machine-generated.

A rare ciliated hepatic cyst, histologically similar to bronchial and esophageal cysts, was identified. This finding suggests these cysts may originate from the embryonic foregut, expanding our understanding of hepatic cyst origins.

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Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst

Published on: March 31, 2023

Area of Science:

Gastroenterology
Histopathology
Embryology

Background:

Liver cysts are uncommon, with diverse origins and histological presentations.
Biliary cystadenomas are a known type of intrahepatic cystic lesion.

Observation:

A solitary unilocular liver cyst was characterized.
The cyst lining featured ciliated, pseudostratified, columnar epithelium.
A smooth muscle layer and fibrous capsule composed the cyst wall.

Findings:

The histological features differentiated the cyst from biliary cystadenoma.
The cyst's histology closely resembled ciliated bronchial and esophageal cysts.
This suggests a shared origin from the embryonic foregut for these cyst types.

Implications:

This study introduces the concept of ciliated hepatic cysts, previously unrecognized in the liver.
It proposes a unified spectrum for foregut-derived cysts, including hepatic, bronchial, and esophageal.
This expands the differential diagnosis for liver cystic lesions.