Evidence map›Paper›PMID 25610074›Full record

ArticleThe Eurasian journal of medicine2009

A stereological and electron microscopic study of the development of the nephron in prenatal and postnatal rats.

Nejdet Şimşek, Berrrin Z Altunkaynak, Deniz Ünal, Serpil Can, Ismail Malkoç, Bünyami Ünal

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Article in The Eurasian journal of medicine, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed
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1 citing paper in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Nejdet ŞimşekAtatürk University, Faculty of Veterinary Medicine, Department of Histology and Embryology, Erzurum, Turkey.
Berrrin Z AltunkaynakAtatürk University, Faculty of Medicine, Department of Histology and Embryology, Erzurum, Turkey.
Deniz ÜnalAtatürk University, Faculty of Medicine, Department of Histology and Embryology, Erzurum, Turkey.
Serpil CanAtatürk University, Faculty of Medicine, Department of Physiology, Erzurum, Turkey.
Ismail MalkoçAtatürk University, Faculty of Medicine, Department of Anatomy, Erzurum, Turkey.
Bünyami ÜnalAtatürk University, Faculty of Medicine, Department of Histology and Embryology, Erzurum, Turkey.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe the morphometric and ultra-structural features of the kidney in fetal (20-day-old), newborn (7-day-old) and adult (180-day-old) rats. MATERIALS AND

methodsKidneys from all animals were excised, fixed in 3% glutaraldehyde in 0.1 M phosphate buffer, post-fixed in 1% phosphate-buffered osmium tetroxide, and examined by stereological and light and electron microscopic methods.

resultsFetal kidneys displayed kidney corpuscles, glomeruli, and proximal and collective tubules at multiple developmental stages. Glomeruli in the outer surfaces of the kidney were less mature than those in the inner surface. Kidney corpuscles were made up of parietal cells and podocytes without feet. Kidneys from newborn rats were almost completely developed, while kidneys in adult rats were fully developed. Under stereological examination, the percent volume of cortex in fetal kidneys (86.19%) was higher than in newborn (53.77%) or adult rats (76.78%). Compared to both newborn and fetal rats, adult rats displayed the highest total volumes of distal and proximal tubules, but lower mean glomerular or Bowman's capsule volumes. On the other hand, the total number of glomeruli was increased in adult rats (32,600) as compared to newborn (17,896) and fetal (11,650) rats.

conclusionThese data suggest that development of metanephric kidneys is not yet complete by gestational day 20, but is almost complete at postnatal week one. Furthermore, the developmental stage of the kidney, as determined by stereology, correlates well with the age of the rat.

Indexed as

KidneyPrenatal and postnatal developmentStereology

Identifiers

PMID25610074
PMCPMC4261467

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