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Related Concept Videos

Lysosomal Hydrolases01:22

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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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...
Esophageal Achalasia01:27

Esophageal Achalasia

Esophageal achalasia is a chronic neurogenic disorder characterized by impaired relaxation of the lower esophageal sphincter (LES) and absent or ineffective peristalsis in the distal esophagus. This leads to a functional obstruction without a physical blockage, despite significant disruption of esophageal motility.EtiologyAchalasia is caused by degeneration of the myenteric (Auerbach's) plexus, specifically the loss of inhibitory ganglion cells that produce vasoactive intestinal peptide (VIP)...
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Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...

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Related Experiment Video

Updated: Jun 25, 2026

Fingerprinting Cardiolipin in Leukocytes by Mass Spectrometry for a Rapid Diagnosis of Barth Syndrome
06:48

Fingerprinting Cardiolipin in Leukocytes by Mass Spectrometry for a Rapid Diagnosis of Barth Syndrome

Published on: March 23, 2022

Papillon-Lefèvre syndrome: a case report.

A R Pradeep1, Sujatha B Pai

  • 1Department of Periodontics, Government Dental College and Hospital, Fort, Bangalore, India. drarpradeep@hotmail.com

The New York State Dental Journal
|February 7, 2009
PubMed
Summary

Papillon-Lefèvre syndrome, a rare genetic disorder, causes severe periodontal disease and skin issues. Early, intensive treatment combining mechanical and antimicrobial approaches may help manage its progression.

Area of Science:

  • Genetics and rare diseases
  • Dermatology
  • Periodontology

Background:

  • Papillon-Lefèvre syndrome is a rare autosomal recessive disorder.
  • Characterized by severe early-onset periodontitis and palmoplantar hyperkeratosis.
  • Increased susceptibility to infections is also a common feature.

Observation:

  • An 8-year-old child presented with classic symptoms of Papillon-Lefèvre syndrome.
  • The patient exhibited periodontal disease in both primary and permanent teeth, alongside palmar and plantar keratosis.
  • Family history indicated consanguinity and affected siblings, supporting a genetic etiology.

Findings:

  • The case highlights the typical clinical presentation of Papillon-Lefèvre syndrome.
  • Review of literature suggests potential for disease modification.

Related Experiment Videos

Last Updated: Jun 25, 2026

Fingerprinting Cardiolipin in Leukocytes by Mass Spectrometry for a Rapid Diagnosis of Barth Syndrome
06:48

Fingerprinting Cardiolipin in Leukocytes by Mass Spectrometry for a Rapid Diagnosis of Barth Syndrome

Published on: March 23, 2022

  • Successful outcomes reported in some patients treated with combined therapies.
  • Implications:

    • Early diagnosis and intervention are crucial for managing Papillon-Lefèvre syndrome.
    • Intensive mechanical and antimicrobial periodontal therapy may halt disease progression.
    • Further research into optimal treatment strategies for this rare syndrome is warranted.