University of Khartoum

Ultrastructural and Morphometric Studies of the Accessory Male Glands of the One-Humped Camel (Camelus dromedarius

Ultrastructural and Morphometric Studies of the Accessory Male Glands of the One-Humped Camel (Camelus dromedarius

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Title: Ultrastructural and Morphometric Studies of the Accessory Male Glands of the One-Humped Camel (Camelus dromedarius
Author: Sara Abdel Rahman El Hussien, El Hussien
Abstract: The accessory glands of forty camels were studied histologically, ultrastructurally and morphometrically. An alveolus of the prostate gland is lined with one layer of low to high columnar cells (17.6 µm). Dark and light cells were identified together with basal cells. The dark and light cells were characterized by the presence of spherical nucleus, a massive Golgi complex, abundant mitochondria, large amount of rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). A large number of secretory granules, numerous vacuoles and lipid droplets were also present. Basal cells were characterised by the large dense nucleus, a few mitochondria, small amount of RER, vacuoles and dense granules. The cell was generally poor in organelles. The mean volume of the prostate gland in the camel was 28.81 cm3. The volume densities (Vv) and the total number of the different components of the prostate gland were determined by standard morphometric methods. The glandular tissue formed 52.91% of the volume of the gland followed by connective tissue and muscle 34.68%, blood vessels and nerves 6.89% and lastly the duct 15.52%. Ultrastructurally, three different types of units were identified in the bulb urethral glands of the camel; type A, type B and type C. Each unit was lined with one layer of pyramidal, cuboidal or columnar cells (21 µm). Type A unit cells were characterised by the presence of a flat basal nucleus, well developed Golgi complex, a few mitochondria and abundant RER. Various electron lucent granules containing tiny electron dense inclusions, lysosomes and fat droplet were present. Type B units were lined by two types of cells, dark and light. Myoepithelial cells were seen around some of the units. Epithelial cells had spherical nucleus, elements of SER, a large Golgi complex, abundant mitochondria and short profiles of RER. Membrane-bound bodies, free ribosomes and abundant secretory granules were observed. A composite picture in which both types of cells are present in the same secretory units is represented by type C units. The basal cells were irregularly pyramidal with a large nucleus occupying most of the cytoplasm. The cell had a small Golgi complex, a few mitochondria, small profiles of RER and a few vacuoles. The mean volume of the bulbourethral glands of the camel was 13.49 cm3. The mean volume density (Vv) of the connective tissue and muscle was 35.23%, followed by glandular tissue types of B, C, A being 19.76%, 18.88%, 15.38%, respectively, duct 6.39%, and lastly blood vessels and nerves amounting to 4.36%. Histologically, the pelvic urethral gland was lined with one layer of pyramidal or columnar cells (17 µm), with basal spherical nucleus. Some units have basal cells wedged between the lining cells and the basement membrane. Ultrastructurally, cells of the pelvic urethra are characterised by the presence of large electron dense bodies. The cytoplasm of the cell was packed with different types of secretory granules, vacuoles and ribosomes. A large Golgi complex, many mitochondria, well developed RER and a few SER. The basal cells are irregularly pyramidal in shape with a large pyramidal nucleus. A small Golgi complex, a few mitochondria some profile of RER and a small number vacuolar space. The mean volume of the urethral glands of the camel was 64.7 cm3. The connective tissue and muscle constituted 81.66% followed by glandular tissue 8.94%, blood vessels and nerves amounting to 6.04% and lastly the duct occupying 3.36%. It was suggested that the pelvic urethral glands play a small role in contributing to secretion of the seminal plasma.
URI: http://khartoumspace.uofk.edu/handle/123456789/14664
Date: 2015-06-23


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