Title
Histological characterization of umbilical cord in alpaca (Vicugna pacos)
Date Issued
01 December 2017
Access level
metadata only access
Resource Type
journal article
Author(s)
Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA) El Mantaro
Universidad Complutense de Madrid
Publisher(s)
Blackwell Publishing Ltd
Abstract
The histomorphometric features of umbilical cord constituents in seven foetuses of alpaca (Vicugna pacos) from Cerro de Pasco, Department, Peru, were determined. Sections of 2–5 cm of umbilical cord were fixed in 10% neutral buffered formalin and processed for light microscopy. Standard histological slides stained with haematoxylin and eosin, Masson's trichrome and Van Gieson's trichrome were obtained. Histologically, common features of umbilical artery and vein were observed as well as mucous connective tissue, some cell features that compound this tissue constituted by cells presented features of myofibroblasts. Among most important findings that were observed, the lumen of umbilical vein was obliterated into star-shaped form with the thinner umbilical artery wall; the smooth muscles and fibroblast were comparatively more in number in umbilical artery than that of umbilical vein, and the tunica media was larger in dimension than the tunica adventitia in umbilical vein. Conclusively, this histological study features an observation of the umbilical cord of alpaca foetuses and shows the similarity between them and those of other mammal species, including dromedaries and South American camelids.
Start page
533
End page
538
Volume
46
Issue
6
Language
English
OCDE Knowledge area
Ciencia veterinaria
Scopus EID
2-s2.0-85028951899
PubMed ID
Source
Journal of Veterinary Medicine Series C: Anatomia Histologia Embryologia
ISSN of the container
03402096
Sponsor(s)
All applicable international, national and/or institutional guidelines for the care and use of animals were followed. All the animals were humanely treated during sample collection in accordance with the rules of the Medical Ethics and Animal Care Committee of the Universidad Nacional Mayor de San Marcos (UNMSM), Lima, Peru (no protocol number was assigned), which adhere to the Public Health Service (PHS) policies of the Office of Laboratory Animal Welfare, Office of Extramural Research, National Institutes of Health (OLAH-OER-NIH), USA (PHS approved assurance number A5934-01).
Sources of information:
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