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Related Concept Videos

Glomerular Filtration01:15

Glomerular Filtration

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The filtration membrane in the renal system is a highly specialized structure essential for filtering blood. It consists of glomerular capillaries and podocytes, forming a selective barrier that permits the passage of water and small solutes while restricting most plasma proteins and blood cells.
Components of the Filtration Membrane
The filtration process involves three key layers: the glomerular endothelial cells, the basement membrane, and the podocyte-formed filtration slits.
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Glomerular Filtration Rate and its Regulation01:28

Glomerular Filtration Rate and its Regulation

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The Glomerular Filtration Rate (GFR) is a measure of kidney function, reflecting the volume of filtrate formed per minute in the kidneys. On average, GFR is approximately 125 mL/min in males and 105 mL/min in females. Maintaining a relatively constant GFR is essential for the kidneys to effectively regulate body fluid homeostasis and maintain extracellular stability.
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
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Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration01:28

Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration

230
Glomerular filtration rate (GFR) can be estimated from serum creatinine using the modification of diet in renal disease (MDRD) formula or the chronic kidney disease–epidemiology collaboration (CKD–EPI) equation. Both methods are widely used in clinical practice to assess kidney function and guide treatment decisions.The MDRD equation does not require weight or height measurements and is normalized to the body surface area of 1.73 m², considered the average adult surface area.
230
Glomerular Filtration: Net Filtration Pressure01:26

Glomerular Filtration: Net Filtration Pressure

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Glomerular filtration, a key process in the kidneys, is regulated by three main pressures: Glomerular blood hydrostatic pressure (GBHP), Capsular hydrostatic pressure (CHP), and Blood colloid osmotic pressure (BCOP).
GBHP, with an average value of 55 mmHg, promotes filtration by pushing water and solutes through the filtration membrane. This is balanced by two opposing forces: CHP, a "back pressure" exerted against the filtration membrane by fluid already in the capsular space and renal...
8.1K
Renal Drug Excretion: Glomerular Filtration01:02

Renal Drug Excretion: Glomerular Filtration

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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....
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Drug Elimination by Renal Route: Glomerular Filtration01:17

Drug Elimination by Renal Route: Glomerular Filtration

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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 takes place. 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...
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Related Experiment Video

Updated: Jan 31, 2026

Assessment of Kidney Function in Mouse Models of Glomerular Disease
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Assessment of Kidney Function in Mouse Models of Glomerular Disease

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C4d in Native Glomerular Diseases.

Preeti Chandra

    American Journal of Nephrology
    |January 7, 2019
    PubMed
    Summary
    This summary is machine-generated.

    Complement activation is key in kidney diseases. This review summarizes glomerular C4d deposition data, aiding research into complement

    Keywords:
    Complement pathways lectinC4dComplement pathways classicalGlomerular diseases

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    Area of Science:

    • Nephrology
    • Immunology
    • Pathology

    Background:

    • Complement activation is implicated in numerous glomerular diseases.
    • Specific complement pathway involvement is not fully elucidated for all glomerular pathologies.
    • C4d deposition indicates activation of the classical or lectin complement pathways.

    Purpose of the Study:

    • To review and synthesize existing data on glomerular C4d deposition in native kidney biopsies.
    • To highlight C4d's role across various glomerular diseases.
    • To identify knowledge gaps and guide future research on complement's role in glomerular diseases.

    Main Methods:

    • Systematic review of literature concerning glomerular C4d deposition in native kidney biopsies.
    • Analysis of data across different glomerular pathologies.
    • Comparison of C4d data availability between distinct glomerular diseases.

    Main Results:

    • Glomerular C4d deposition is a marker for classical and lectin pathway activation in kidney diseases.
    • Data on C4d deposition is more abundant for certain conditions like Immunoglobulin A (IgA) nephropathy.
    • Scant data exists for C4d deposition in other diseases, such as focal segmental glomerulosclerosis.

    Conclusions:

    • Glomerular C4d deposition is a valuable indicator in understanding complement activation pathways in kidney disease.
    • Further research is needed to fully understand the role of complement and C4d in less-studied glomerular pathologies.
    • This review provides a foundation for future investigations into complement-driven kidney diseases.