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Anatomia, histologia, embryologia2020; 49(5); 656-678; doi: 10.1111/ahe.12588

Endothelial cells and angiogenesis in the horse in health and disease-A review.

Abstract: The cardiovascular system is the first functional organ in the embryo, and its blood vessels form a widespread conductive network within the organism. Blood vessels develop de novo, by the differentiation of endothelial progenitor cells (vasculogenesis) or by angiogenesis, which is the formation of new blood vessels from existing ones. This review presents an overview of the current knowledge on physiological and pathological angiogenesis in the horse including studies on equine endothelial cells. Principal study fields in equine angiogenesis research were identified: equine endothelial progenitor cells; equine endothelial cells and angiogenesis (heterogeneity, markers and assessment); endothelial regulatory molecules in equine angiogenesis; angiogenesis research in equine reproduction (ovary, uterus, placenta and conceptus, testis); angiogenesis research in pathological conditions (tumours, ocular pathologies, equine wound healing, musculoskeletal system and laminitis). The review also includes a table that summarizes in vitro studies on equine endothelial cells, either describing the isolation procedure or using previously isolated endothelial cells. A particular challenge of the review was that results published are fragmentary and sometimes even contradictory, raising more questions than they answer. In conclusion, angiogenesis is a major factor in several diseases frequently occurring in horses, but relatively few studies focus on angiogenesis in the horse. The challenge for the future is therefore to continue exploring new therapeutic angiogenesis strategies for horses to fill in the missing pieces of the puzzle.
Publication Date: 2020-07-08 PubMed ID: 32639627DOI: 10.1111/ahe.12588Google Scholar: Lookup
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  • Journal Article
  • Review

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article provides an overview of the current understanding of the role of the development of new blood vessels, or angiogenesis, in horses, in both healthy and diseased states. It identifies main areas of study within this field, and highlights that despite its importance, there are relatively few studies focusing on angiogenesis in horses, revealing a need for ongoing research in this area.

Understanding Angiogenesis in Horses

The research article explores several aspects of endothelial cells and angiogenesis in horses:

  • Endothelial progenitor cells: These are the cells that differentiate, or develop, into the endothelial cells lining the blood vessels. This process, called vasculogenesis, is a part of the formation of the cardiovascular system, the first functional organ in the embryo.
  • Equine endothelial cells: The review touches upon the varying types (heterogeneity) and markers of equine endothelial cells. It also describes how the functioning of these cells can be assessed.
  • Regulatory molecules: The review explores the role of certain molecules in regulating the process of angiogenesis in horses.

Angiogenesis Research in Equine Reproduction and Pathological Conditions

The review also examines how angiogenesis plays a role in various areas such as:

  • Reproductive organs: The study delves into how angiogenesis is part of the functioning of organs involved in equine reproduction, such as the ovaries, uterus, placenta, conceptus, and testes.
  • Pathological conditions: Angiogenesis is also a factor in several diseases that frequently occur in horses. The review explores this in the context of tumours, eye diseases, wound healing, the musculoskeletal system, and a certain hoof-related disease called laminitis.

Challenges in Angiogenesis Research

Despite presenting an insightful overview of angiogenesis in horses, the review acknowledges the challenges faced within this area of research:

  • Results of studies on equine angiogenesis have been found to be fragmentary and sometimes contradictory. This seems to raise more questions than it answers.
  • Despite angiogenesis being a major factor in several equine diseases, there seems to be a dearth of studies focusing specifically on this aspect.

Future Directions

Given the gaps in the existing understanding of angiogenesis in horses, the review advocates for more research in this area. Developing new therapeutic strategies for managing diseases in horses by targeting angiogenesis is suggested as a potential direction for future research.

Cite This Article

APA
Rieger J, Kaessmeyer S, Al Masri S, Hünigen H, Plendl J. (2020). Endothelial cells and angiogenesis in the horse in health and disease-A review. Anat Histol Embryol, 49(5), 656-678. https://doi.org/10.1111/ahe.12588

Publication

ISSN: 1439-0264
NlmUniqueID: 7704218
Country: Germany
Language: English
Volume: 49
Issue: 5
Pages: 656-678

Researcher Affiliations

Rieger, Juliane
  • Department of Veterinary Medicine, Institute for Veterinary Anatomy, Freie Universität Berlin, Berlin, Germany.
Kaessmeyer, Sabine
  • Department of Veterinary Medicine, Institute for Veterinary Anatomy, Freie Universität Berlin, Berlin, Germany.
Al Masri, Salah
  • Department of Veterinary Medicine, Institute for Veterinary Anatomy, Freie Universität Berlin, Berlin, Germany.
Hünigen, Hana
  • Department of Veterinary Medicine, Institute for Veterinary Anatomy, Freie Universität Berlin, Berlin, Germany.
Plendl, Johanna
  • Department of Veterinary Medicine, Institute for Veterinary Anatomy, Freie Universität Berlin, Berlin, Germany.

MeSH Terms

  • Animals
  • Cardiovascular System / embryology
  • Cardiovascular System / growth & development
  • Endothelial Progenitor Cells / physiology
  • Eye Diseases / pathology
  • Eye Diseases / veterinary
  • Female
  • Hoof and Claw / blood supply
  • Hoof and Claw / pathology
  • Horse Diseases / pathology
  • Horses / embryology
  • Horses / growth & development
  • Male
  • Musculoskeletal System / anatomy & histology
  • Musculoskeletal System / blood supply
  • Neoplasms / blood supply
  • Neoplasms / veterinary
  • Ovary / blood supply
  • Ovary / physiology
  • Placenta / physiology
  • Pregnancy
  • Reproduction
  • Testis / blood supply
  • Uterus / blood supply
  • Uterus / physiology
  • Wound Healing / physiology

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