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Related Concept Videos

Chronic Inflammation: Introduction01:12

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Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
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Acute Kidney Injury II: Pathophysiology01:29

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Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
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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.
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Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to...
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Diabetic Nephropathy01:28

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Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration...
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Acute Kidney Injury I: Introduction01:22

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Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
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Inflammatory processes in renal fibrosis.

Xiao-Ming Meng1, David J Nikolic-Paterson2, Hui Yao Lan3

  • 1School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei, Anhui 230032, China.

Nature Reviews. Nephrology
|July 2, 2014
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Summary
This summary is machine-generated.

Unresolved kidney inflammation drives progressive renal fibrosis and end-stage renal disease. Understanding immune cell roles in this process is key to developing new therapies for chronic kidney disease.

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Area of Science:

  • Nephrology
  • Immunology
  • Pathology

Background:

  • Kidney injury often triggers inflammation as a defense mechanism.
  • Persistent inflammation, however, accelerates renal fibrosis, potentially leading to end-stage renal disease.
  • The interplay between inflammation and fibrosis in kidney disease is complex, involving immune and intrinsic renal cells.

Purpose of the Study:

  • To elucidate the mechanisms by which inflammation drives renal fibrosis.
  • To identify key cellular players and molecular mediators in the inflammation-fibrosis axis.
  • To provide a foundation for developing targeted therapeutics for chronic kidney disease.

Main Methods:

  • Review and synthesis of existing data on kidney inflammation and fibrosis.
  • Analysis of the roles of various immune cells (macrophages, T cells, mast cells) and intrinsic renal cells.
  • Examination of profibrotic cytokine and growth factor production.

Main Results:

  • Inflammation, if unresolved, promotes progressive renal fibrosis.
  • Tubular epithelial cells are increasingly recognized for their role in linking glomerular inflammation to interstitial fibrosis.
  • Macrophages are implicated in both promoting fibrosis and facilitating repair, demonstrating plasticity.

Conclusions:

  • Understanding the mechanisms linking inflammation to renal fibrosis is crucial.
  • Targeting these mechanisms may halt the progression of chronic kidney disease.
  • Further research into immune cell plasticity and cellular crosstalk is warranted.