Spontaneous aortic lesions in marine turtles

Area of Science:

• Comparative pathology
• Marine biology
• Cardiovascular research

Background:

• Marine turtles present with aortic abnormalities, including aneurysmal dilations and raised plaques.
• These lesions bear resemblance to human Marfan syndrome and chemically induced lesions in animals.
• Understanding these conditions can offer insights into comparative cardiovascular health.

Purpose of the Study:

• To investigate the pathological characteristics of aortic lesions in marine turtles.
• To compare these lesions with known human aortic diseases and experimentally induced conditions.
• To explore similarities in smooth muscle cell responses to injury between marine turtles and humans.

Main Methods:

• Gross pathological examination of marine turtle aortas.
• Histopathological analysis of aortic lesions.
• Comparative analysis with human Marfan syndrome and animal models.

Main Results:

• Marine turtles displayed gross aortic aneurysmal dilations and multiple grayish-white plaques.
• The observed aortic lesions were morphologically similar to those seen in human Marfan syndrome.
• Smooth muscle cells within these lesions showed functional and morphological similarities in response to environmental injury in both species.

Conclusions:

• Marine turtle aortic lesions share characteristics with human Marfan syndrome.
• Smooth muscle cell responses to environmental injury in turtles and humans exhibit notable similarities.
• This study highlights potential shared pathways in cardiovascular disease between marine turtles and humans.