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Lymphangiogenesis in human dental pulp.

F J G S Pimenta1, A R Sá, R S Gomez

  • 1Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

International Endodontic Journal
|December 4, 2003
PubMed
Summary

Inflammation in human dental pulp promotes lymphangiogenesis, indicated by a significant increase in lymphatic vessels. This finding suggests new blood vessel formation in response to dental caries and inflammation.

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Area of Science:

  • Oral Biology
  • Immunology
  • Vascular Biology

Background:

  • Dental pulp inflammation is a common response to caries.
  • Lymphangiogenesis, the formation of new lymphatic vessels, plays a role in inflammatory processes.
  • The lymphatic system's role in dental pulp inflammation is not fully understood.

Purpose of the Study:

  • To investigate the impact of inflammation on lymphangiogenesis in human dental pulp.
  • To determine if dental pulp inflammation is associated with an increase in lymphatic vessels.

Main Methods:

  • Compared 11 inflamed dental pulp samples with 11 non-inflamed samples.
  • Used streptavidin-biotin complex staining for CD31, VEGFR-3, and alpha-smooth muscle actin.
  • Quantified lymphatic vessels by counting CD31+/VEGFR-3+ and alpha-smooth muscle actin-negative vessels.

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Main Results:

  • Inflamed dental pulps showed a statistically significant higher number of lymphatic vessels (6.09 +/- 1.81) compared to non-inflamed pulps (3.73 +/- 2.20).
  • Increased co-immunostaining for CD31 and VEGFR-3 was observed in inflamed dental pulp vessels.

Conclusions:

  • Human dental pulp inflammation is associated with an increase in lymphatic vessels.
  • The findings suggest lymphangiogenesis occurs in inflamed human dental pulp.
  • This indicates a potential role for the lymphatic system in the inflammatory response within the dental pulp.