Light and electron microscopic studies on some lymph nodes of the adult one-humped camel (Camelus dromedarius)

Soliman, S. M.; Mazher, Khaled Mohamed

doi:10.21608/jvmr.2005.77925

Cited by 2 publications

(2 citation statements)

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“…The inguinal lymph node appears bulky, enormous, elongated and fusiform, in the male its location is in the fold of the groin across the rudimentary teats. It rests on the abdominal coat, which has been demonstrated by the author (Abell-Мagied et al, 2001;Saliman & Mazher, 2005). The scrotal node is related to the caudal preputial muscles and is limited ventrally by the abdominal subcutaneous vein.…”

Section: Discussionmentioning

confidence: 83%

Morphological and radiological study of lymph nodes in dromedaries in Algeria

Demyanyuk

Symochko

Mostoviak

2020

Regul. Mech. Biosyst.

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Despite significant progress in the study of the subtle mechanisms of interaction between cellular and molecular elements in immune responses, the general structure of the organs of the immune system, including the lymph node, has not been sufficiently studied, in particular in large farm animals. The lymph nodes of sexually mature camels have been studied anatomically and morphologically and advanced studies conducted using an X-ray system and a computer densitometer scanner with injection of a contrast medium. The topography and characteristics of the morphometric parameters (absolute and relative mass, linear measurements, volume) of certain somatic and visceral lymph nodes were determined. The mass of the lymph nodes studied varies according to the location and the interest of the organ in the satellite defense of the lymphoid system, For part of the x-ray examination of the lymph nodes, organs of large inguinal and axillary shape were selected after passing through a solution of tetraethyl-4,4-diamino-triphenylmethane oxalate, the lymph vessels were dilated and darkened, then iodine injections were made into the afferent lymphatic vessel of two lymph nodes; they were placed on the radiological cassette, a photograph taken on conventional radiography, for computer densitometer, the examination was made without preparation of the organs. A capsule encompasses the parenchyma of the lymph node, whose internal structure is composed of different zones, cortical, paracortical and medullary, on the one hand the lymphatic vessels were very clear especially with the conventional radiography with preparation of the organs, while the computer densitometer clearly revealed the deep texture of the parenchyma, basing it on the intensity of emission saturation from the use of computer densitometer.

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Section: Discussionmentioning

confidence: 83%

Morphological and radiological study of lymph nodes in dromedaries in Algeria

Demyanyuk

Symochko

Mostoviak

2020

Regul. Mech. Biosyst.

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“…Таким образом, лимфоидная паренхима в лимфатических узлах верблюда, как и соответствующий компонент данных органов у других видов млекопитающих, имеет четко выраженные признаки зональной специализации и интеграции. Участки паренхимы, которые в ряде работ обозначаются как анодулярная плотная лимфоидная ткань (Abdel-Magied, 2001, Saliman andMazher, 2005), являются, по сути, зонами транзита лимфоцитов и межклеточного взаимодействия, в совокупности с зонами клональной пролиферации Т-лимфоцитов, первые из которых, как правило, примыкают к перитрабекулярным синусам трабекул І типа, а вторые расположены в более глубоких участках паренхимы. Диффузная лимфоидная ткань представляет собой совокупность мозговых тяжей, которые обеспечивают аккумуляцию плазмоцитов и синтез антител, а в лимфатических узелках, как известно, происходит клональная пролиферация В-лимфоцитов и образование клеток памяти (Rouse et al, 1984;Palm et al, 2016).…”

Section: результаты и их обсуждениеunclassified

Structural and functional units of parenchyma of lymph nodes of drometaries (Camelus dromedarius)

Gavrilin¹,

Gavrilina²,

Brygadyrenko³

et al. 2017

Regul. Mech. Biosyst.

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This article analyzes patterns of structural and functional organization of the parenchyma of different groups of lymph nodes, structural features of their connective tissue frame and lymphatic sinuses. We studied superficial and deep somatic (Limphonodi mandibulares, L. cervicales superficiales, L. axillares proprii, L. poplitei), somatovisceral (L. retropharyngei mediales, L. iliaci mediales), visceral (L. mediastinales caudales, L. jejunales) features of mature male drometaries (Camelus dromedarius Linnaeus, 1758). We used a complex of traditional macroscopic and histological techniques, and also immunohistochemical staining of lymph node sections for identifying the features of localization of T- and B-lymphocyte populations in the parenchyma of the nodes. We found that the parenchyma of camels’ lymph nodes is characterized by a spongy type structure in the form of a complex of partly concrescent round-oval fragments of lymphoid tissue, surrounded by large lymphatic spaces (sinuses). The connective tissue frame of the lymph nodes is represented by a two-layer (connective tissue-muscular) capsule and two types of trabeculae: two-layered (connective-muscular, type I), which contain blood and lymphatic vessels, as well as lymphatic cysternas, and a single-layered, formed only by a smooth muscular system (type II). Intranodal lymphatic sinuses are subdivided into subcapsular, peritrabecular and medullary sinuses. The subcapsular sinuses and sinuses related to trabeculae of type I and their branching are the most developed. At the tissue level, the lymph node parenchyma has a clearly manifested lobular structure. Lymphoid lobules in the lymph node parenchyma are positioned diffusely (mosaically) and consist of four main cellular zones: transit and cell-cell interaction (analogous to the cortical plateau), clonal proliferation of T- and, respectively, B-lymphocytes (deep cortex units, lymphatic nodules), accumulation of plasmocytes and synthesis of antibodies (brain cords). The lymphoid lobes (compartments) of the lymph nodes parenchyma are bipolar, their tops formed by the zones of transit and cell-cell interaction, and also by the zones of proliferation of B lymphocytes, and the bases by a complex of brain cords (zone of accumulation of plasmocytes and synthesis of antibodies). The zone of T-lymphocytes proliferation is in intermediate position and underlies the subunits of the parenchyma. The tops of the lymphoid lobes are located along the sinuses of the trabeculae of type I and the bases along the sinuses of the trabeculae of type II, which form the efferent lymphatic vessels. The maximum relative capacity of all studied lymph nodes was typical for zones of plasmocyte accumulation and synthesis of antibodies (19–27%), the minimum capacity was typical for transit and cell-cell interaction zones (3–8%). The relative capacity of zones of clonal proliferation of T- and B-lymphocytes in most lymph nodes was 1.5–3.0 times less than that of the zone of plasmocyte accumulation and antibody formation and was, respectively, 8–16% and 9–18%. The study showed that the structure of the lymph nodes parenchyma of drometaries is not absolutely unique. As in other mammal species, it is subdivided into specialized cell zones which are connected in lymphoid lobules. Specific features of parenchyma structure include: diffuse (mosaic) location of lymphoid lobules; absence of signs of regulated localization of lymphoid lobules relative to the capsule and the sinus bordering the nodes.

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Light and electron microscopic studies on some lymph nodes of the adult one-humped camel (Camelus dromedarius)

Cited by 2 publications

References 4 publications

Morphological and radiological study of lymph nodes in dromedaries in Algeria

Morphological and radiological study of lymph nodes in dromedaries in Algeria

Structural and functional units of parenchyma of lymph nodes of drometaries (Camelus dromedarius)

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