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Related Concept Videos

Chronic Kidney Disease II: Clinical Manifestations01:24

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...
Serum Studies: Renal Function Tests01:24

Serum Studies: Renal Function Tests

Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Renal Corpuscle01:20

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...
Nephrotic Syndrome I : Introduction01:24

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 16, 2026

A Mouse 5/6th Nephrectomy Model That Induces Experimental Uremic Cardiomyopathy
07:52

A Mouse 5/6th Nephrectomy Model That Induces Experimental Uremic Cardiomyopathy

Published on: November 7, 2017

Hyperhomocysteinemia in renal diseases.

Dumitru Ferechide1, Daniela Radulescu

  • 1Carol Davila" UMP, Department of Physiology, Bucharest, Romania.

Journal of Medicine and Life
|January 30, 2010
PubMed
Summary

High homocysteine levels (hyperhomocysteinemia) are linked to vascular disease, especially in kidney failure patients. While folic acid can lower homocysteine, its impact on cardiovascular health needs further study.

Area of Science:

  • Biochemistry
  • Cardiovascular Medicine
  • Nephrology

Background:

  • Homocysteine, a sulfurated amino acid, is crucial for methionine synthesis.
  • Hyperhomocysteinemia is recognized as an independent risk factor for atherosclerotic vascular disease.
  • Vascular injury mechanisms driven by hyperhomocysteinemia contribute to its atherogenic properties.

Purpose of the Study:

  • To review the role of hyperhomocysteinemia in vascular disease, particularly in chronic renal failure patients.
  • To discuss the persistence of hyperhomocysteinemia after renal replacement therapies.
  • To evaluate the impact of folic acid and folinic acid therapies on homocysteine levels and cardiovascular outcomes.

Main Methods:

  • Literature review of recent research on homocysteine and vascular disease.

Related Experiment Videos

Last Updated: Jun 16, 2026

A Mouse 5/6th Nephrectomy Model That Induces Experimental Uremic Cardiomyopathy
07:52

A Mouse 5/6th Nephrectomy Model That Induces Experimental Uremic Cardiomyopathy

Published on: November 7, 2017

  • Analysis of studies concerning hyperhomocysteinemia in patients with chronic renal failure, dialysis, and transplantation.
  • Examination of data on folic acid and folinic acid interventions.

    • Main Results:

    • Hyperhomocysteinemia is prevalent in 85% of chronic renal failure patients, where cardiovascular disease is the leading cause of mortality.
    • Elevated homocysteine levels persist despite dialysis and renal transplantation.
    • Folic acid or folinic acid therapy can reduce homocysteine levels by 20-40% in hemodialysis patients.

    Conclusions:

    • Hyperhomocysteinemia is a significant risk factor for vascular complications in chronic kidney disease.
    • Therapeutic reduction of homocysteine levels with folic acid shows promise but requires further investigation for proven cardiovascular benefits.