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Related Concept Videos

Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

48
Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
48
Renal Clearance01:23

Renal Clearance

699
The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
699
Renal Drug Clearance: Comparison Between Renal Excretion Methods01:08

Renal Drug Clearance: Comparison Between Renal Excretion Methods

64
Renal clearance is a critical parameter encompassing kidney filtration, secretion, and reabsorption processes. It is calculated using a specific equation to determine the rate at which the kidneys clear a drug.
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
64
Determination of Renal Drug Clearance: Graphical and Midpoint Methods01:07

Determination of Renal Drug Clearance: Graphical and Midpoint Methods

69
Renal clearance, a crucial parameter in pharmacokinetics, can be determined using two different methods: the graphical method and the midpoint method. These methods provide insights into the rate of drug excretion by the kidneys and aid in assessing renal function.
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
69
Renal Drug Clearance: Overview01:06

Renal Drug Clearance: Overview

109
Renal clearance is a crucial parameter in pharmacokinetics that quantifies the rate at which the kidneys excrete a drug. It represents a constant fraction of the central volume of distribution containing the drug that the kidney eliminates per unit of time.
Renal clearance can be calculated using different methods. One approach is to divide the urinary drug excretion rate by the plasma drug concentration. This method directly measures renal clearance, indicating the kidneys' efficiency in...
109
Renal Drug Excretion: Glomerular Filtration01:02

Renal Drug Excretion: Glomerular Filtration

128
The kidney serves as the primary organ responsible for eliminating drugs and their metabolites from the body. This process, known as renal elimination, starts with glomerular filtration and results in urine formation. Each kidney houses millions of functional units called nephrons, where urine production occurs. A nephron has two main components: a renal corpuscle and a renal tubule.
Drugs gain access to the kidney via the renal artery, which progressively branches off into afferent arterioles....
128

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Updated: May 29, 2025

A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice
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Beyond creatinine: New methods to measure renal function?

M Salman Sheikh1, Kianoush B Kashani2

  • 1Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA.

European Journal of Internal Medicine
|February 1, 2025
PubMed
Summary
This summary is machine-generated.

Accurate kidney function assessment is vital for managing kidney diseases. This review explores serum creatinine limitations and highlights advanced biomarkers and real-time technologies for improved renal function evaluation.

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Area of Science:

  • Nephrology
  • Biomarker Discovery
  • Medical Technology

Background:

  • Accurate kidney function assessment is crucial for diagnosing and managing chronic kidney disease (CKD) and acute kidney injury (AKI).
  • Serum creatinine, while widely used, has significant limitations.
  • There is a need for alternative and complementary biomarkers and technologies for renal function evaluation.

Purpose of the Study:

  • To review the benefits and limitations of serum creatinine as a biomarker for kidney function.
  • To explore alternative kidney function biomarkers like Cystatin C and ProEnkephalin.
  • To examine traditional gold-standard techniques and innovative real-time glomerular filtration rate (GFR) measurement technologies.

Main Methods:

  • Literature review of existing studies on kidney function biomarkers and technologies.
  • Analysis of the benefits and limitations of serum creatinine, Cystatin C, ProEnkephalin, creatinine clearance, radioisotopes, and inulin clearance.
  • Highlighting recent innovations in real-time GFR measurement, including transdermal monitoring and dual fluorescent tracers.

Main Results:

  • Serum creatinine has limitations impacting its accuracy in assessing kidney function.
  • Cystatin C and ProEnkephalin show promise as alternative biomarkers.
  • Innovations like transdermal monitoring (MB-102) and dual fluorescent tracers offer real-time GFR measurement capabilities.

Conclusions:

  • Advancements in biomarkers and real-time technologies may redefine renal function assessment.
  • Further development, validation, and clinical integration of these innovations are necessary.
  • Improved assessment of kidney function will enhance patient diagnosis, treatment, and outcomes.