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Related Concept Videos

Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Changes in Skin Color: Clinical Perspectives01:14

Changes in Skin Color: Clinical Perspectives

The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
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,...
Lethal Alleles02:41

Lethal Alleles

Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...

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Related Experiment Video

Updated: Jun 29, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
04:44

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

[Could Aleijadinho have suffered from scleroderma].

V F Azevedo1

  • 1Hospital de Clínicas da Universidade Federal do Paraná, Curitiba, Paraná, Brasil. valderilio@hotmail.com

Reumatismo
|October 16, 2008
PubMed
Summary

This study explores the possibility that renowned Brazilian sculptor Aleijadinho, despite severe disabilities, had scleroderma. Historical evidence suggests this rheumatic condition may explain his lifelong artistic output.

Area of Science:

  • Medical History
  • Rheumatology
  • Art History

Background:

  • Historical figures, including artists, have been impacted by rheumatic conditions.
  • Source documents like letters and artwork offer insights into historical medical conditions.
  • Aleijadinho, a prominent Brazilian sculptor, faced extreme disability but continued creating art.

Discussion:

  • This study examines the clinical profile of Aleijadinho, considering his documented physical challenges.
  • The possibility of scleroderma is discussed as a potential diagnosis for his condition.
  • The intersection of art, disability, and medical history is explored through Aleijadinho's life.

Key Insights:

  • Aleijadinho's lifelong artistic production despite severe disability is a key focus.

Related Experiment Videos

Last Updated: Jun 29, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
04:44

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

  • Scleroderma is proposed as a potential diagnosis for his complex medical presentation.
  • The study highlights the value of art historical sources in understanding past illnesses.

    • Outlook:

    • Further research could involve comparative analyses with other artists exhibiting similar conditions.
    • Investigating the progression of rheumatic diseases in artists can enhance medical historical understanding.
    • This case study contributes to the broader discussion on disability and artistic resilience.