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Thymic Hassall's corpuscles in Nandanam chicken - light and electronmicroscopic perspective (Gallus domesticus).

Kannan TA, Ramesh G, Ushakumary S, Dhinakarraj G, Vairamuthu S - J Anim Sci Technol (2015)

Bottom Line: The epithelial cells had abundance of cytoplasmic fibrils and desmosomes with few mitochondria and ribosomes.The nucleus was oval or round which was slightly indented.The centre of the Hassall's corpuscles was appeared either solid or cystic.

View Article: PubMed Central - PubMed

Affiliation: Centre for Stem Cell Research and Regenerative Medicine Madras Veterinary College, Tamil Nadu veterinary and Animal Sciences University, Chennai, 600 007 India.

ABSTRACT
The present study was aimed to study the light and electron microscopic studies of thymic Hassall's corpuscles was done in various age groups of Nandanam Chicken ranging from day-old to forty weeks. Hassall's corpuscles are special, unique structures present in thymic medulla and also in the cortex of all the age groups of Nandanam chicken (from hatch to forty weeks) in the present study. Size of the Hassall's corpuscles in the medulla is larger than the ones present in the cortical region of thymus. The Hassall's corpuscles are made up of structureless eosinophilic mass surrounded by concentrically arranged reticuloepithelial cells. Under electron microscope, the Hassall's corpuscles were composed of reticuloepithelial cells interconnected by many desmosomes. The epithelial cells had abundance of cytoplasmic fibrils and desmosomes with few mitochondria and ribosomes. The nucleus was oval or round which was slightly indented. The centre of the Hassall's corpuscles was appeared either solid or cystic. The cystic corpuscles had cell debris within the cyst lumen.

No MeSH data available.


Related in: MedlinePlus

Transmission electronmicrograph of thymus of an eight week-old chicken showing the Hassall’s corpuscles x 7000. Cd - Cell debris, Cy - Cyst, Re - Reticuloepithelial cell
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Fig4: Transmission electronmicrograph of thymus of an eight week-old chicken showing the Hassall’s corpuscles x 7000. Cd - Cell debris, Cy - Cyst, Re - Reticuloepithelial cell

Mentions: Under electron microscope, the Hassall’s corpuscles were composed of reticuloepithelial cells interconnected by many desmosomes. These epithelial cells had abundance of cytoplasmic fibrils and desmosomes with few mitochondria and ribosomes. The nucleus was oval or round which was slightly indented (Fig. 3). A nucleolus was also observed. The centre of the Hassall’s corpuscles was appeared either solid or cystic. The cystic corpuscles had cell debris within the cyst lumen (Fig. 4). However, some of them were seen empty. The lining epithelial cells had microvilli [24]. In contrast, the large Hassall’s corpuscles were not often seen in the chick thymus, when present they were composed of concentric rings of squamous epithelial cells interconnected by many desmosomes [25].Fig. 3


Thymic Hassall's corpuscles in Nandanam chicken - light and electronmicroscopic perspective (Gallus domesticus).

Kannan TA, Ramesh G, Ushakumary S, Dhinakarraj G, Vairamuthu S - J Anim Sci Technol (2015)

Transmission electronmicrograph of thymus of an eight week-old chicken showing the Hassall’s corpuscles x 7000. Cd - Cell debris, Cy - Cyst, Re - Reticuloepithelial cell
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4589919&req=5

Fig4: Transmission electronmicrograph of thymus of an eight week-old chicken showing the Hassall’s corpuscles x 7000. Cd - Cell debris, Cy - Cyst, Re - Reticuloepithelial cell
Mentions: Under electron microscope, the Hassall’s corpuscles were composed of reticuloepithelial cells interconnected by many desmosomes. These epithelial cells had abundance of cytoplasmic fibrils and desmosomes with few mitochondria and ribosomes. The nucleus was oval or round which was slightly indented (Fig. 3). A nucleolus was also observed. The centre of the Hassall’s corpuscles was appeared either solid or cystic. The cystic corpuscles had cell debris within the cyst lumen (Fig. 4). However, some of them were seen empty. The lining epithelial cells had microvilli [24]. In contrast, the large Hassall’s corpuscles were not often seen in the chick thymus, when present they were composed of concentric rings of squamous epithelial cells interconnected by many desmosomes [25].Fig. 3

Bottom Line: The epithelial cells had abundance of cytoplasmic fibrils and desmosomes with few mitochondria and ribosomes.The nucleus was oval or round which was slightly indented.The centre of the Hassall's corpuscles was appeared either solid or cystic.

View Article: PubMed Central - PubMed

Affiliation: Centre for Stem Cell Research and Regenerative Medicine Madras Veterinary College, Tamil Nadu veterinary and Animal Sciences University, Chennai, 600 007 India.

ABSTRACT
The present study was aimed to study the light and electron microscopic studies of thymic Hassall's corpuscles was done in various age groups of Nandanam Chicken ranging from day-old to forty weeks. Hassall's corpuscles are special, unique structures present in thymic medulla and also in the cortex of all the age groups of Nandanam chicken (from hatch to forty weeks) in the present study. Size of the Hassall's corpuscles in the medulla is larger than the ones present in the cortical region of thymus. The Hassall's corpuscles are made up of structureless eosinophilic mass surrounded by concentrically arranged reticuloepithelial cells. Under electron microscope, the Hassall's corpuscles were composed of reticuloepithelial cells interconnected by many desmosomes. The epithelial cells had abundance of cytoplasmic fibrils and desmosomes with few mitochondria and ribosomes. The nucleus was oval or round which was slightly indented. The centre of the Hassall's corpuscles was appeared either solid or cystic. The cystic corpuscles had cell debris within the cyst lumen.

No MeSH data available.


Related in: MedlinePlus