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Nephrons

Nephrons

The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma happens...

Chronic Kidney Disease I: Introduction

Chronic Kidney Disease I: Introduction

Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage renal disease. At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate for...

Renal Corpuscle

Renal Corpuscle

The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...

Chronic Kidney Disease II: Clinical Manifestations

Chronic Kidney Disease II: Clinical Manifestations

Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...

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Related Experiment Video

Updated: Jun 19, 2026

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium

Published on: September 1, 2015

Susceptibility genes in common complex kidney disease.

Jasmin Divers¹, Barry I Freedman

¹Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157-1053, USA.

Current Opinion in Nephrology and Hypertension

|October 20, 2009

Summary

Genetic variants like MYH9 are key to understanding chronic kidney disease (CKD) and end-stage renal disease (ESRD). Research clarifies gene roles, improving CKD surveillance and treatment strategies.

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Last Updated: Jun 19, 2026

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium

Published on: September 1, 2015

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice

Published on: May 2, 2025

Identification of the Source of Secreted Proteins in the Kidney by Brefeldin A Injection

Identification of the Source of Secreted Proteins in the Kidney by Brefeldin A Injection

Published on: November 10, 2021

Area of Science:

Nephrology
Genetics
Genomics

Background:

Chronic kidney disease (CKD) poses a significant global health burden.
Identifying genetic factors is crucial for understanding disease pathogenesis and progression.

Purpose of the Study:

To review recent advancements in identifying genetic variants associated with CKD risk.
To provide an overview of genetic association studies and emerging research areas.

Main Methods:

Review of current literature on genetic variant identification in CKD.
Analysis of genetic associations and novel research avenues.

Main Results:

The role of susceptibility genes (e.g., MYH9, ELMO1, UMOD, ACTN4) in renal failure is increasingly understood.
MYH9-associated kidney diseases, including focal segmental glomerulosclerosis, contribute significantly to end-stage renal disease in African-Americans.
MYH9 polymorphisms explain a substantial portion of the increased risk for HIV-associated nephropathy and non-diabetic kidney disease in African-Americans.

Conclusions:

MYH9 gene variants are poised to redefine classifications of focal segmental glomerulosclerosis and related disorders.
Understanding genetic predispositions, like MYH9, clarifies links between hypertension and kidney disease.
Replicated associations with ELMO1 and UMOD, alongside genome-wide association studies, offer new insights into renal protein expression and potential therapeutic targets.